49966699956 has 12 divisors (see below), whose sum is σ = 116588966592. Its totient is φ = 16655566648.

The previous prime is 49966699933. The next prime is 49966699963. The reversal of 49966699956 is 65999666994.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×49966699956² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2081945820 + ... + 2081945843.

It is an arithmetic number, because the mean of its divisors is an integer number (9715747216).

Almost surely, 2^49966699956 is an apocalyptic number.

It is an amenable number.

49966699956 is an abundant number, since it is smaller than the sum of its proper divisors (66622266636).

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

49966699956 is a wasteful number, since it uses less digits than its factorization.

49966699956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163891670 (or 4163891668 counting only the distinct ones).

The product of its digits is 1530550080, while the sum is 78.

The spelling of 49966699956 in words is "forty-nine billion, nine hundred sixty-six million, six hundred ninety-nine thousand, nine hundred fifty-six".