49845912840 has 320 divisors, whose sum is σ = 178487971200. Its totient is φ = 12433139712.

The previous prime is 49845912829. The next prime is 49845912889. The reversal of 49845912840 is 4821954894.

It is a happy number.

49845912840 is a `hidden beast` number, since 4 + 9 + 8 + 4 + 591 + 2 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9195651 + ... + 9201069.

It is an arithmetic number, because the mean of its divisors is an integer number (557774910).

Almost surely, 2^49845912840 is an apocalyptic number.

49845912840 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 49845912840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89243985600).

49845912840 is an abundant number, since it is smaller than the sum of its proper divisors (128642058360).

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

49845912840 is a wasteful number, since it uses less digits than its factorization.

49845912840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626 (or 5613 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 49845912840 in words is "forty-nine billion, eight hundred forty-five million, nine hundred twelve thousand, eight hundred forty".