49991611432 has 96 divisors (see below), whose sum is σ = 112293648000. Its totient is φ = 20794475520.

The previous prime is 49991611409. The next prime is 49991611441. The reversal of 49991611432 is 23411619994.

It is a super-2 number, since 2×49991611432² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1813432 + ... + 1840792.

It is an arithmetic number, because the mean of its divisors is an integer number (1169725500).

Almost surely, 2^49991611432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49991611432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56146824000).

49991611432 is an abundant number, since it is smaller than the sum of its proper divisors (62302036568).

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

49991611432 is a wasteful number, since it uses less digits than its factorization.

49991611432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27519 (or 27508 counting only the distinct ones).

The product of its digits is 419904, while the sum is 49.

The spelling of 49991611432 in words is "forty-nine billion, nine hundred ninety-one million, six hundred eleven thousand, four hundred thirty-two".