49821039966 has 16 divisors (see below), whose sum is σ = 101522119824. Its totient is φ = 16293673344.

The previous prime is 49821039929. The next prime is 49821039973. The reversal of 49821039966 is 66993012894.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78334651 + ... + 78335286.

It is an arithmetic number, because the mean of its divisors is an integer number (6345132489).

Almost surely, 2^49821039966 is an apocalyptic number.

49821039966 is an abundant number, since it is smaller than the sum of its proper divisors (51701079858).

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

49821039966 is a wasteful number, since it uses less digits than its factorization.

49821039966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156669995.

The product of its (nonzero) digits is 5038848, while the sum is 57.

The spelling of 49821039966 in words is "forty-nine billion, eight hundred twenty-one million, thirty-nine thousand, nine hundred sixty-six".