63706744990 has 128 divisors (see below), whose sum is σ = 140225126400. Its totient is φ = 20368212480.

The previous prime is 63706744949. The next prime is 63706745041. The reversal of 63706744990 is 9944760736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59594176 + ... + 59595244.

It is an arithmetic number, because the mean of its divisors is an integer number (1095508800).

Almost surely, 2^63706744990 is an apocalyptic number.

63706744990 is an abundant number, since it is smaller than the sum of its proper divisors (76518381410).

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

63706744990 is a wasteful number, since it uses less digits than its factorization.

63706744990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090.

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 63706744990 in words is "sixty-three billion, seven hundred six million, seven hundred forty-four thousand, nine hundred ninety".