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61272406353 = 3123716511023
BaseRepresentation
bin111001000100000111…
…101011100101010001
312212011011211202010110
4321010013223211101
52000441214000403
644052000151533
74266246601134
oct710407534521
9185134752113
1061272406353
1123a92748864
12ba600085a9
135a16253562
142d7387021b
1518d92e2103
hexe441eb951

61272406353 has 8 divisors (see below), whose sum is σ = 81762590848. Its totient is φ = 40815246384.

The previous prime is 61272406337. The next prime is 61272406427. The reversal of 61272406353 is 35360427216.

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

It is not a de Polignac number, because 61272406353 - 24 = 61272406337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61272406303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8251801 + ... + 8259222.

It is an arithmetic number, because the mean of its divisors is an integer number (10220323856).

Almost surely, 261272406353 is an apocalyptic number.

It is an amenable number.

61272406353 is a deficient number, since it is larger than the sum of its proper divisors (20490184495).

61272406353 is a wasteful number, since it uses less digits than its factorization.

61272406353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16512263.

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 61272406353 in words is "sixty-one billion, two hundred seventy-two million, four hundred six thousand, three hundred fifty-three".

Divisors: 1 3 1237 3711 16511023 49533069 20424135451 61272406353