63434725401720 has 128 divisors (see below), whose sum is σ = 190416039105600. Its totient is φ = 16905985818624.

The previous prime is 63434725401689. The next prime is 63434725401731. The reversal of 63434725401720 is 2710452743436.

It is a self number, because there is not a number n which added to its sum of digits gives 63434725401720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2358768594 + ... + 2358795486.

Almost surely, 2^{63434725401720} is an apocalyptic number.

63434725401720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63434725401720 is an abundant number, since it is smaller than the sum of its proper divisors (126981313703880).

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

63434725401720 is a wasteful number, since it uses less digits than its factorization.

63434725401720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37729 (or 37725 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 48.

The spelling of 63434725401720 in words is "sixty-three trillion, four hundred thirty-four billion, seven hundred twenty-five million, four hundred one thousand, seven hundred twenty".