49025851816 has 24 divisors (see below), whose sum is σ = 93666588030. Its totient is φ = 24048181248.

The previous prime is 49025851799. The next prime is 49025851859. The reversal of 49025851816 is 61815852094.

It can be written as a sum of positive squares in 3 ways, for example, as 45407348100 + 3618503716 = 213090^2 + 60154^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 49025851816.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4553896 + ... + 4564648.

Almost surely, 2^49025851816 is an apocalyptic number.

It is an amenable number.

49025851816 is a deficient number, since it is larger than the sum of its proper divisors (44640736214).

49025851816 is an frugal number, since it uses more digits than its factorization.

49025851816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21565 (or 10808 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 49.

The spelling of 49025851816 in words is "forty-nine billion, twenty-five million, eight hundred fifty-one thousand, eight hundred sixteen".