49775394816 has 405 divisors, whose sum is σ = 169306859631. Its totient is φ = 14050197504.

The previous prime is 49775394787. The next prime is 49775394821. The reversal of 49775394816 is 61849357794.

The square root of 49775394816 is 223104.

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

49775394816 is a `hidden beast` number, since 4 + 97 + 7 + 539 + 4 + 8 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 599703511 + ... + 599703593.

Almost surely, 2^49775394816 is an apocalyptic number.

49775394816 is the 223104-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49775394816

49775394816 is an abundant number, since it is smaller than the sum of its proper divisors (119531464815).

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

49775394816 is an frugal number, since it uses more digits than its factorization.

49775394816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 95 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 49775394816 in words is "forty-nine billion, seven hundred seventy-five million, three hundred ninety-four thousand, eight hundred sixteen".