51148192986 has 64 divisors (see below), whose sum is σ = 124026163200. Its totient is φ = 15495634800.

The previous prime is 51148192967. The next prime is 51148193003. The reversal of 51148192986 is 68929184115.

51148192986 is a `hidden beast` number, since 511 + 48 + 1 + 9 + 2 + 9 + 86 = 666.

It is a super-2 number, since 2×51148192986² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3241905 + ... + 3257643.

It is an arithmetic number, because the mean of its divisors is an integer number (1937908800).

Almost surely, 2^51148192986 is an apocalyptic number.

51148192986 is an abundant number, since it is smaller than the sum of its proper divisors (72877970214).

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

51148192986 is a wasteful number, since it uses less digits than its factorization.

51148192986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21232 (or 21226 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The spelling of 51148192986 in words is "fifty-one billion, one hundred forty-eight million, one hundred ninety-two thousand, nine hundred eighty-six".