55155651165656 has 64 divisors (see below), whose sum is σ = 112260950524800. Its totient is φ = 25303506375168.

The previous prime is 55155651165649. The next prime is 55155651165701. The reversal of 55155651165656 is 65656115655155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5958266 + ... + 12075273.

It is an arithmetic number, because the mean of its divisors is an integer number (1754077351950).

Almost surely, 2^{55155651165656} is an apocalyptic number.

It is an amenable number.

55155651165656 is an abundant number, since it is smaller than the sum of its proper divisors (57105299359144).

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

55155651165656 is a wasteful number, since it uses less digits than its factorization.

55155651165656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034128 (or 18034124 counting only the distinct ones).

The product of its digits is 101250000, while the sum is 62.

The spelling of 55155651165656 in words is "fifty-five trillion, one hundred fifty-five billion, six hundred fifty-one million, one hundred sixty-five thousand, six hundred fifty-six".