63112771680 has 96 divisors (see below), whose sum is σ = 227205990144. Its totient is φ = 14425775616.

The previous prime is 63112771679. The next prime is 63112771693. The reversal of 63112771680 is 8617721136.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9388422 + ... + 9395141.

It is an arithmetic number, because the mean of its divisors is an integer number (2366729064).

Almost surely, 2^63112771680 is an apocalyptic number.

63112771680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63112771680 is an abundant number, since it is smaller than the sum of its proper divisors (164093218464).

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

63112771680 is a wasteful number, since it uses less digits than its factorization.

63112771680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18783588 (or 18783580 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 63112771680 in words is "sixty-three billion, one hundred twelve million, seven hundred seventy-one thousand, six hundred eighty".