538520438340 has 96 divisors (see below), whose sum is σ = 1675505905920. Its totient is φ = 143596108800.

The previous prime is 538520438299. The next prime is 538520438377. The reversal of 538520438340 is 43834025835.

538520438340 is a `hidden beast` number, since 5 + 3 + 8 + 520 + 4 + 3 + 83 + 40 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13496820 + ... + 13536660.

It is an arithmetic number, because the mean of its divisors is an integer number (17453186520).

Almost surely, 2^538520438340 is an apocalyptic number.

It is an amenable number.

538520438340 is an abundant number, since it is smaller than the sum of its proper divisors (1136985467580).

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

538520438340 is a wasteful number, since it uses less digits than its factorization.

538520438340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64890 (or 64882 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 538520438340 in words is "five hundred thirty-eight billion, five hundred twenty million, four hundred thirty-eight thousand, three hundred forty".