49408712640 has 1344 divisors, whose sum is σ = 219994398720. Its totient is φ = 10212065280.

The previous prime is 49408712611. The next prime is 49408712651. The reversal of 49408712640 is 4621780494.

49408712640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 676831644 + ... + 676831716.

Almost surely, 2^49408712640 is an apocalyptic number.

49408712640 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 49408712640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109997199360).

49408712640 is an abundant number, since it is smaller than the sum of its proper divisors (170585686080).

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

49408712640 is a wasteful number, since it uses less digits than its factorization.

49408712640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 49408712640 in words is "forty-nine billion, four hundred eight million, seven hundred twelve thousand, six hundred forty".