49686773730 has 128 divisors (see below), whose sum is σ = 139056777216. Its totient is φ = 11240486400.

The previous prime is 49686773729. The next prime is 49686773767. The reversal of 49686773730 is 3737768694.

It is a super-2 number, since 2×49686773730² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 231357 + ... + 391023.

It is an arithmetic number, because the mean of its divisors is an integer number (1086381072).

Almost surely, 2^49686773730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49686773730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69528388608).

49686773730 is an abundant number, since it is smaller than the sum of its proper divisors (89370003486).

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

49686773730 is a wasteful number, since it uses less digits than its factorization.

49686773730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159752.

The product of its (nonzero) digits is 32006016, while the sum is 60.

The spelling of 49686773730 in words is "forty-nine billion, six hundred eighty-six million, seven hundred seventy-three thousand, seven hundred thirty".