2634138661374 has 128 divisors (see below), whose sum is σ = 6842890575360. Its totient is φ = 742217817600.

The previous prime is 2634138661369. The next prime is 2634138661393. The reversal of 2634138661374 is 4731668314362.

2634138661374 is a `hidden beast` number, since 2 + 6 + 3 + 4 + 13 + 8 + 6 + 613 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2634138661374.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 733297 + ... + 2409564.

It is an arithmetic number, because the mean of its divisors is an integer number (53460082620).

Almost surely, 2^{2634138661374} is an apocalyptic number.

2634138661374 is an abundant number, since it is smaller than the sum of its proper divisors (4208751913986).

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

2634138661374 is a wasteful number, since it uses less digits than its factorization.

2634138661374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142983 (or 3142977 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 54.

The spelling of 2634138661374 in words is "two trillion, six hundred thirty-four billion, one hundred thirty-eight million, six hundred sixty-one thousand, three hundred seventy-four".