65551000155 has 32 divisors (see below), whose sum is σ = 109569867264. Its totient is φ = 33401339136.

The previous prime is 65551000139. The next prime is 65551000169. The reversal of 65551000155 is 55100015556.

65551000155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65551000155 - 2⁴ = 65551000139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184812 + ... + 406518.

It is an arithmetic number, because the mean of its divisors is an integer number (3424058352).

Almost surely, 2^65551000155 is an apocalyptic number.

65551000155 is a deficient number, since it is larger than the sum of its proper divisors (44018867109).

65551000155 is a wasteful number, since it uses less digits than its factorization.

65551000155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222595.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 65551000155 in words is "sixty-five billion, five hundred fifty-one million, one hundred fifty-five", and thus it is an aban number.