387699682401 has 6 divisors (see below), whose sum is σ = 560010652370. Its totient is φ = 258466454928.

The previous prime is 387699682399. The next prime is 387699682429. The reversal of 387699682401 is 104286996783.

387699682401 is a `hidden beast` number, since 3 + 8 + 7 + 69 + 96 + 82 + 401 = 666.

It can be written as a sum of positive squares in only one way, i.e., 360144014400 + 27555668001 = 600120^2 + 165999^2 .

It is not a de Polignac number, because 387699682401 - 2¹ = 387699682399 is a prime.

It is a super-2 number, since 2×387699682401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387699682451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21538871236 + ... + 21538871253.

Almost surely, 2^387699682401 is an apocalyptic number.

It is an amenable number.

387699682401 is a deficient number, since it is larger than the sum of its proper divisors (172310969969).

387699682401 is a wasteful number, since it uses less digits than its factorization.

387699682401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43077742495 (or 43077742492 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 387699682401 in words is "three hundred eighty-seven billion, six hundred ninety-nine million, six hundred eighty-two thousand, four hundred one".