63642790940 has 24 divisors (see below), whose sum is σ = 133670205312. Its totient is φ = 25453241280.

The previous prime is 63642790933. The next prime is 63642790957. The reversal of 63642790940 is 4909724636.

It is a super-3 number, since 3×63642790940³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105644 + ... + 372083.

It is an arithmetic number, because the mean of its divisors is an integer number (5569591888).

Almost surely, 2^63642790940 is an apocalyptic number.

It is an amenable number.

63642790940 is an abundant number, since it is smaller than the sum of its proper divisors (70027414372).

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

63642790940 is a wasteful number, since it uses less digits than its factorization.

63642790940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484397 (or 484395 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 63642790940 in words is "sixty-three billion, six hundred forty-two million, seven hundred ninety thousand, nine hundred forty".