538315178940 has 1152 divisors, whose sum is σ = 2243266099200. Its totient is φ = 105763553280.

The previous prime is 538315178927. The next prime is 538315178953. The reversal of 538315178940 is 49871513835.

538315178940 is a `hidden beast` number, since 5 + 3 + 8 + 3 + 1 + 517 + 89 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (538315178927) and next prime (538315178953).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 649354446 + ... + 649355274.

It is an arithmetic number, because the mean of its divisors is an integer number (1947279600).

Almost surely, 2^538315178940 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 538315178940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1121633049600).

538315178940 is an abundant number, since it is smaller than the sum of its proper divisors (1704950920260).

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

538315178940 is a wasteful number, since it uses less digits than its factorization.

538315178940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 977 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 538315178940 in words is "five hundred thirty-eight billion, three hundred fifteen million, one hundred seventy-eight thousand, nine hundred forty".