63191340576 has 864 divisors, whose sum is σ = 237767781888. Its totient is φ = 15490621440.

The previous prime is 63191340523. The next prime is 63191340581. The reversal of 63191340576 is 67504319136.

It is a happy number.

63191340576 is a `hidden beast` number, since 6 + 31 + 9 + 1 + 3 + 40 + 576 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1035923586 + ... + 1035923646.

It is an arithmetic number, because the mean of its divisors is an integer number (275194192).

Almost surely, 2^63191340576 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 63191340576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118883890944).

63191340576 is an abundant number, since it is smaller than the sum of its proper divisors (174576441312).

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

63191340576 is a wasteful number, since it uses less digits than its factorization.

63191340576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The spelling of 63191340576 in words is "sixty-three billion, one hundred ninety-one million, three hundred forty thousand, five hundred seventy-six".