387642474540 has 72 divisors (see below), whose sum is σ = 1176292506480. Its totient is φ = 103332322944.

The previous prime is 387642474533. The next prime is 387642474553. The reversal of 387642474540 is 45474246783.

387642474540 is a `hidden beast` number, since 3 + 8 + 7 + 6 + 4 + 24 + 74 + 540 = 666.

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, 73662 + ... + 883578.

Almost surely, 2^387642474540 is an apocalyptic number.

387642474540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

387642474540 is an abundant number, since it is smaller than the sum of its proper divisors (788650031940).

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

387642474540 is a wasteful number, since it uses less digits than its factorization.

387642474540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812591 (or 812586 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 54.

The spelling of 387642474540 in words is "three hundred eighty-seven billion, six hundred forty-two million, four hundred seventy-four thousand, five hundred forty".