55615160363440 has 80 divisors (see below), whose sum is σ = 129377900721888. Its totient is φ = 22233568186368.

The previous prime is 55615160363419. The next prime is 55615160363447. The reversal of 55615160363440 is 4436306151655.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×55615160363440² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55615160363447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1211821134 + ... + 1211867026.

Almost surely, 2^{55615160363440} is an apocalyptic number.

It is an amenable number.

55615160363440 is an abundant number, since it is smaller than the sum of its proper divisors (73762740358448).

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

55615160363440 is a wasteful number, since it uses less digits than its factorization.

55615160363440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54086 (or 54080 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 55615160363440 in words is "fifty-five trillion, six hundred fifteen billion, one hundred sixty million, three hundred sixty-three thousand, four hundred forty".