381747511489600 has 63 divisors (see below), whose sum is σ = 939339393526117. Its totient is φ = 152698691982080.

The previous prime is 381747511489583. The next prime is 381747511489639. The reversal of 381747511489600 is 6984115747183.

The square root of 381747511489600 is 19538360.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 137429104136256 + 244318407353344 = 11723016^2 + 15630688^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 781290171 + ... + 781778629.

Almost surely, 2^{381747511489600} is an apocalyptic number.

381747511489600 is the 19538360-th square number.

It is an amenable number.

381747511489600 is an abundant number, since it is smaller than the sum of its proper divisors (557591882036517).

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

381747511489600 is an frugal number, since it uses more digits than its factorization.

381747511489600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976940 (or 488466 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 64.

381747511489600 divided by its sum of digits (64) gives a square (5964804867025 = 2442295²).

The spelling of 381747511489600 in words is "three hundred eighty-one trillion, seven hundred forty-seven billion, five hundred eleven million, four hundred eighty-nine thousand, six hundred".