51149499852 has 48 divisors (see below), whose sum is σ = 130288822272. Its totient is φ = 15489122880.

The previous prime is 51149499847. The next prime is 51149499871. The reversal of 51149499852 is 25899494115.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 51149499792 and 51149499801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58453 + ... + 325139.

It is an arithmetic number, because the mean of its divisors is an integer number (2714350464).

Almost surely, 2^51149499852 is an apocalyptic number.

It is an amenable number.

51149499852 is an abundant number, since it is smaller than the sum of its proper divisors (79139322420).

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

51149499852 is a wasteful number, since it uses less digits than its factorization.

51149499852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268158 (or 268156 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 57.

It can be divided in two parts, 5114949 and 9852, that added together give a triangular number (5124801 = T₃₂₀₁).

The spelling of 51149499852 in words is "fifty-one billion, one hundred forty-nine million, four hundred ninety-nine thousand, eight hundred fifty-two".