51948879804 has 72 divisors (see below), whose sum is σ = 137253890592. Its totient is φ = 16535692800.

The previous prime is 51948879799. The next prime is 51948879821. The reversal of 51948879804 is 40897884915.

51948879804 is a `hidden beast` number, since 5 + 1 + 9 + 488 + 79 + 80 + 4 = 666.

It is a super-2 number, since 2×51948879804² (a number of 22 digits) contains 22 as substring.

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, 445432 + ... + 549824.

It is an arithmetic number, because the mean of its divisors is an integer number (1906304036).

Almost surely, 2^51948879804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51948879804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68626945296).

51948879804 is an abundant number, since it is smaller than the sum of its proper divisors (85305010788).

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

51948879804 is a wasteful number, since it uses less digits than its factorization.

51948879804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105027 (or 105022 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 63.

The spelling of 51948879804 in words is "fifty-one billion, nine hundred forty-eight million, eight hundred seventy-nine thousand, eight hundred four".