49638157761 has 16 divisors (see below), whose sum is σ = 73765684800. Its totient is φ = 29506272768.

The previous prime is 49638157757. The next prime is 49638157763. The reversal of 49638157761 is 16775183694.

It is a happy number.

49638157761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49638157761 - 2² = 49638157757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (49638157763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25612116 + ... + 25614053.

It is an arithmetic number, because the mean of its divisors is an integer number (4610355300).

Almost surely, 2^49638157761 is an apocalyptic number.

It is an amenable number.

49638157761 is a deficient number, since it is larger than the sum of its proper divisors (24127527039).

49638157761 is a wasteful number, since it uses less digits than its factorization.

49638157761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51226208.

The product of its digits is 7620480, while the sum is 57.

The spelling of 49638157761 in words is "forty-nine billion, six hundred thirty-eight million, one hundred fifty-seven thousand, seven hundred sixty-one".