49139108694 has 48 divisors (see below), whose sum is σ = 114702430752. Its totient is φ = 15113856384.

The previous prime is 49139108693. The next prime is 49139108731. The reversal of 49139108694 is 49680193194.

It is a happy number.

49139108694 is a `hidden beast` number, since 4 + 91 + 391 + 0 + 86 + 94 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 49139108694.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49139108693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 583714 + ... + 662570.

It is an arithmetic number, because the mean of its divisors is an integer number (2389633974).

Almost surely, 2^49139108694 is an apocalyptic number.

49139108694 is an abundant number, since it is smaller than the sum of its proper divisors (65563322058).

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

49139108694 is a wasteful number, since it uses less digits than its factorization.

49139108694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81541 (or 81538 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 49139108694 in words is "forty-nine billion, one hundred thirty-nine million, one hundred eight thousand, six hundred ninety-four".