49690781892 has 36 divisors (see below), whose sum is σ = 125684984880. Its totient is φ = 16553343792.

The previous prime is 49690781827. The next prime is 49690781923. The reversal of 49690781892 is 29818709694.

It is a tau number, because it is divible by the number of its divisors (36).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 367998 + ... + 484565.

It is an arithmetic number, because the mean of its divisors is an integer number (3491249580).

Almost surely, 2^49690781892 is an apocalyptic number.

It is an amenable number.

49690781892 is an abundant number, since it is smaller than the sum of its proper divisors (75994202988).

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

49690781892 is a wasteful number, since it uses less digits than its factorization.

49690781892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854192 (or 854187 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 49690781892 in words is "forty-nine billion, six hundred ninety million, seven hundred eighty-one thousand, eight hundred ninety-two".