7138578861634 has 16 divisors (see below), whose sum is σ = 11740606865856. Its totient is φ = 3228337462000.

The previous prime is 7138578861629. The next prime is 7138578861643. The reversal of 7138578861634 is 4361688758317.

It is a self number, because there is not a number n which added to its sum of digits gives 7138578861634.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823551142 + ... + 823559809.

It is an arithmetic number, because the mean of its divisors is an integer number (733787929116).

Almost surely, 2^{7138578861634} is an apocalyptic number.

7138578861634 is a deficient number, since it is larger than the sum of its proper divisors (4602028004222).

7138578861634 is a wasteful number, since it uses less digits than its factorization.

7138578861634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647111161.

The product of its digits is 162570240, while the sum is 67.

The spelling of 7138578861634 in words is "seven trillion, one hundred thirty-eight billion, five hundred seventy-eight million, eight hundred sixty-one thousand, six hundred thirty-four".