3878464641408 has 96 divisors (see below), whose sum is σ = 12755069754960. Its totient is φ = 1108132752384.

The previous prime is 3878464641371. The next prime is 3878464641433. The reversal of 3878464641408 is 8041464648783.

3878464641408 is a `hidden beast` number, since 3 + 8 + 78 + 464 + 64 + 1 + 40 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240472135 + ... + 240488262.

Almost surely, 2^{3878464641408} is an apocalyptic number.

It is an amenable number.

3878464641408 is an abundant number, since it is smaller than the sum of its proper divisors (8876605113552).

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

3878464641408 is a wasteful number, since it uses less digits than its factorization.

3878464641408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480960424 (or 480960409 counting only the distinct ones).

The product of its (nonzero) digits is 99090432, while the sum is 63.

The spelling of 3878464641408 in words is "three trillion, eight hundred seventy-eight billion, four hundred sixty-four million, six hundred forty-one thousand, four hundred eight".