55101301621240 has 64 divisors (see below), whose sum is σ = 141689709120960. Its totient is φ = 18891788467200.

The previous prime is 55101301621187. The next prime is 55101301621307. The reversal of 55101301621240 is 4212610310155.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104765964 + ... + 105290596.

It is an arithmetic number, because the mean of its divisors is an integer number (2213901705015).

Almost surely, 2^{55101301621240} is an apocalyptic number.

It is an amenable number.

55101301621240 is an abundant number, since it is smaller than the sum of its proper divisors (86588407499720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55101301621240 is a wasteful number, since it uses less digits than its factorization.

55101301621240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899752 (or 899748 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

Adding to 55101301621240 its reverse (4212610310155), we get a palindrome (59313911931395).

The spelling of 55101301621240 in words is "fifty-five trillion, one hundred one billion, three hundred one million, six hundred twenty-one thousand, two hundred forty".