49780274440 has 64 divisors (see below), whose sum is σ = 120729697200. Its totient is φ = 18363912192.

The previous prime is 49780274399. The next prime is 49780274447. The reversal of 49780274440 is 4447208794.

It can be written as a sum of positive squares in 8 ways, for example, as 12238111876 + 37542162564 = 110626^2 + 193758^2 .

It is not an unprimeable number, because it can be changed into a prime (49780274447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544684 + ... + 629476.

Almost surely, 2^49780274440 is an apocalyptic number.

49780274440 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 49780274440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60364848600).

49780274440 is an abundant number, since it is smaller than the sum of its proper divisors (70949422760).

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

49780274440 is a wasteful number, since it uses less digits than its factorization.

49780274440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85946 (or 85942 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 49.

The spelling of 49780274440 in words is "forty-nine billion, seven hundred eighty million, two hundred seventy-four thousand, four hundred forty".