63417738672 has 80 divisors (see below), whose sum is σ = 192740208480. Its totient is φ = 19895758848.

The previous prime is 63417738667. The next prime is 63417738673. The reversal of 63417738672 is 27683771436.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (63417738673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4310313 + ... + 4325000.

It is an arithmetic number, because the mean of its divisors is an integer number (2409252606).

Almost surely, 2^63417738672 is an apocalyptic number.

It is an amenable number.

63417738672 is an abundant number, since it is smaller than the sum of its proper divisors (129322469808).

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

63417738672 is a wasteful number, since it uses less digits than its factorization.

63417738672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8635347 (or 8635335 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 63417738672 in words is "sixty-three billion, four hundred seventeen million, seven hundred thirty-eight thousand, six hundred seventy-two".