49469639440 has 240 divisors, whose sum is σ = 128405495808. Its totient is φ = 17707382784.

The previous prime is 49469639381. The next prime is 49469639441. The reversal of 49469639440 is 4493696494.

It is not an unprimeable number, because it can be changed into a prime (49469639441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80700574 + ... + 80701186.

Almost surely, 2^49469639440 is an apocalyptic number.

49469639440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49469639440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64202747904).

49469639440 is an abundant number, since it is smaller than the sum of its proper divisors (78935856368).

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

49469639440 is a wasteful number, since it uses less digits than its factorization.

49469639440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 58.

The spelling of 49469639440 in words is "forty-nine billion, four hundred sixty-nine million, six hundred thirty-nine thousand, four hundred forty".