525138763878 has 48 divisors (see below), whose sum is σ = 1154125638432. Its totient is φ = 172536000000.

The previous prime is 525138763859. The next prime is 525138763927. The reversal of 525138763878 is 878367831525.

525138763878 is a `hidden beast` number, since 5 + 2 + 513 + 87 + 6 + 38 + 7 + 8 = 666.

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, 5061928 + ... + 5164628.

It is an arithmetic number, because the mean of its divisors is an integer number (24044284134).

Almost surely, 2^525138763878 is an apocalyptic number.

525138763878 is an abundant number, since it is smaller than the sum of its proper divisors (628986874554).

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

525138763878 is a wasteful number, since it uses less digits than its factorization.

525138763878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106781 (or 106778 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 63.

The spelling of 525138763878 in words is "five hundred twenty-five billion, one hundred thirty-eight million, seven hundred sixty-three thousand, eight hundred seventy-eight".