51158777100 has 72 divisors (see below), whose sum is σ = 148113468048. Its totient is φ = 13633670400.

The previous prime is 51158777077. The next prime is 51158777149. The reversal of 51158777100 is 177785115.

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, 425710 + ... + 532490.

Almost surely, 2^51158777100 is an apocalyptic number.

51158777100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51158777100 is an abundant number, since it is smaller than the sum of its proper divisors (96954690948).

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

51158777100 is a wasteful number, since it uses less digits than its factorization.

51158777100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108395 (or 108388 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 42.

The spelling of 51158777100 in words is "fifty-one billion, one hundred fifty-eight million, seven hundred seventy-seven thousand, one hundred".