63835972794 has 192 divisors, whose sum is σ = 162249834240. Its totient is φ = 17942031360.

The previous prime is 63835972751. The next prime is 63835972807. The reversal of 63835972794 is 49727953836.

63835972794 is a `hidden beast` number, since 6 + 3 + 8 + 359 + 7 + 279 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 77003172 + ... + 77004000.

It is an arithmetic number, because the mean of its divisors is an integer number (845051220).

Almost surely, 2^63835972794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63835972794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81124917120).

63835972794 is an abundant number, since it is smaller than the sum of its proper divisors (98413861446).

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

63835972794 is a wasteful number, since it uses less digits than its factorization.

63835972794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1362 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 63835972794 in words is "sixty-three billion, eight hundred thirty-five million, nine hundred seventy-two thousand, seven hundred ninety-four".