51662256426 has 48 divisors (see below), whose sum is σ = 127419963840. Its totient is φ = 14974565760.

The previous prime is 51662256419. The next prime is 51662256433. The reversal of 51662256426 is 62465226615.

51662256426 is a `hidden beast` number, since 5 + 1 + 6 + 62 + 2 + 564 + 26 = 666.

51662256426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51662256419) and next prime (51662256433).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5667631 + ... + 5676738.

It is an arithmetic number, because the mean of its divisors is an integer number (2654582580).

Almost surely, 2^51662256426 is an apocalyptic number.

51662256426 is an abundant number, since it is smaller than the sum of its proper divisors (75757707414).

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

51662256426 is a wasteful number, since it uses less digits than its factorization.

51662256426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11344411 (or 11344408 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 45.

The spelling of 51662256426 in words is "fifty-one billion, six hundred sixty-two million, two hundred fifty-six thousand, four hundred twenty-six".