49658138578 has 16 divisors (see below), whose sum is σ = 76908508416. Its totient is φ = 24022354320.

The previous prime is 49658138573. The next prime is 49658138773. The reversal of 49658138578 is 87583185694.

It is not an unprimeable number, because it can be changed into a prime (49658138573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169525 + ... + 357847.

It is an arithmetic number, because the mean of its divisors is an integer number (4806781776).

Almost surely, 2^49658138578 is an apocalyptic number.

49658138578 is a deficient number, since it is larger than the sum of its proper divisors (27250369838).

49658138578 is a wasteful number, since it uses less digits than its factorization.

49658138578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192609.

The product of its digits is 58060800, while the sum is 64.

The spelling of 49658138578 in words is "forty-nine billion, six hundred fifty-eight million, one hundred thirty-eight thousand, five hundred seventy-eight".