49691336640 has 224 divisors, whose sum is σ = 176116951296. Its totient is φ = 11766128640.

The previous prime is 49691336573. The next prime is 49691336659. The reversal of 49691336640 is 4663319694.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 399364 + ... + 508796.

Almost surely, 2^49691336640 is an apocalyptic number.

49691336640 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 49691336640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058475648).

49691336640 is an abundant number, since it is smaller than the sum of its proper divisors (126425614656).

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

49691336640 is a wasteful number, since it uses less digits than its factorization.

49691336640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109507 (or 109497 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 51.

The spelling of 49691336640 in words is "forty-nine billion, six hundred ninety-one million, three hundred thirty-six thousand, six hundred forty".