49821811264 has 21 divisors (see below), whose sum is σ = 98868700281. Its totient is φ = 24910012800.

The previous prime is 49821811253. The next prime is 49821811309. The reversal of 49821811264 is 46211812894.

The square root of 49821811264 is 223208.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 45110361664 + 4711449600 = 212392^2 + 68640^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1771714 + ... + 1799614.

Almost surely, 2^49821811264 is an apocalyptic number.

49821811264 is the 223208-th square number.

It is an amenable number.

49821811264 is a deficient number, since it is larger than the sum of its proper divisors (49046889017).

49821811264 is an frugal number, since it uses more digits than its factorization.

49821811264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55814 (or 27903 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The spelling of 49821811264 in words is "forty-nine billion, eight hundred twenty-one million, eight hundred eleven thousand, two hundred sixty-four".