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6121530045381 = 32530780630261
BaseRepresentation
bin101100100010100011110…
…0111111011001111000101
3210200012201221202112002010
41121011013213323033011
51300243343142423011
621004105253404433
71201160135566242
oct131050747731705
923605657675063
106121530045381
111a50143139293
1282a488039719
13355347528c5a
141723d841a5c9
15a937d4201a6
hex591479fb3c5

6121530045381 has 8 divisors (see below), whose sum is σ = 8162362682784. Its totient is φ = 4080858719120.

The previous prime is 6121530045377. The next prime is 6121530045391. The reversal of 6121530045381 is 1835400351216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6121530045381 - 22 = 6121530045377 is a prime.

It is a super-2 number, since 2×61215300453812 (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6121530045341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40239210 + ... + 40391051.

It is an arithmetic number, because the mean of its divisors is an integer number (1020295335348).

Almost surely, 26121530045381 is an apocalyptic number.

It is an amenable number.

6121530045381 is a deficient number, since it is larger than the sum of its proper divisors (2040832637403).

6121530045381 is a wasteful number, since it uses less digits than its factorization.

6121530045381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80655571.

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 6121530045381 its reverse (1835400351216), we get a palindrome (7956930396597).

The spelling of 6121530045381 in words is "six trillion, one hundred twenty-one billion, five hundred thirty million, forty-five thousand, three hundred eighty-one".

Divisors: 1 3 25307 75921 80630261 241890783 2040510015127 6121530045381