55012125678 has 16 divisors (see below), whose sum is σ = 110172341376. Its totient is φ = 18312693560.

The previous prime is 55012125643. The next prime is 55012125691. The reversal of 55012125678 is 87652121055.

It is a super-2 number, since 2×55012125678² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6165588 + ... + 6174503.

It is an arithmetic number, because the mean of its divisors is an integer number (6885771336).

Almost surely, 2^55012125678 is an apocalyptic number.

55012125678 is an abundant number, since it is smaller than the sum of its proper divisors (55160215698).

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

55012125678 is a wasteful number, since it uses less digits than its factorization.

55012125678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12340839.

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 55012125678 in words is "fifty-five billion, twelve million, one hundred twenty-five thousand, six hundred seventy-eight".