49990485040 has 80 divisors (see below), whose sum is σ = 122454662400. Its totient is φ = 18926804736.

The previous prime is 49990485037. The next prime is 49990485053. The reversal of 49990485040 is 4058409994.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1753621 + ... + 1781899.

It is an arithmetic number, because the mean of its divisors is an integer number (1530683280).

Almost surely, 2^49990485040 is an apocalyptic number.

49990485040 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 49990485040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61227331200).

49990485040 is an abundant number, since it is smaller than the sum of its proper divisors (72464177360).

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

49990485040 is a wasteful number, since it uses less digits than its factorization.

49990485040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29474 (or 29468 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 49990485040 in words is "forty-nine billion, nine hundred ninety million, four hundred eighty-five thousand, forty".