761633943640 has 64 divisors (see below), whose sum is σ = 1733757177600. Its totient is φ = 301086922752.

The previous prime is 761633943613. The next prime is 761633943649. The reversal of 761633943640 is 46349336167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761633943649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 7579164 + ... + 7678996.

It is an arithmetic number, because the mean of its divisors is an integer number (27089955900).

Almost surely, 2^761633943640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 761633943640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866878588800).

761633943640 is an abundant number, since it is smaller than the sum of its proper divisors (972123233960).

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

761633943640 is a wasteful number, since it uses less digits than its factorization.

761633943640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102076 (or 102072 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 52.

The spelling of 761633943640 in words is "seven hundred sixty-one billion, six hundred thirty-three million, nine hundred forty-three thousand, six hundred forty".