51826420980 has 72 divisors (see below), whose sum is σ = 157228520904. Its totient is φ = 13818470400.

The previous prime is 51826420879. The next prime is 51826421039. The reversal of 51826420980 is 8902462815.

51826420980 is a `hidden beast` number, since 518 + 2 + 6 + 42 + 0 + 98 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 516016656 + 51310404324 = 22716^2 + 226518^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 1698660 + ... + 1728900.

It is an arithmetic number, because the mean of its divisors is an integer number (2183729457).

Almost surely, 2^51826420980 is an apocalyptic number.

It is an amenable number.

51826420980 is an abundant number, since it is smaller than the sum of its proper divisors (105402099924).

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

51826420980 is a wasteful number, since it uses less digits than its factorization.

51826420980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39777 (or 39772 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 51826420980 in words is "fifty-one billion, eight hundred twenty-six million, four hundred twenty thousand, nine hundred eighty".