63457720007 has 12 divisors (see below), whose sum is σ = 70428256080. Its totient is φ = 57128739360.

The previous prime is 63457719991. The next prime is 63457720009. The reversal of 63457720007 is 70002775436.

It is not a de Polignac number, because 63457720007 - 2⁴ = 63457719991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63457720009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2533382 + ... + 2558307.

It is an arithmetic number, because the mean of its divisors is an integer number (5869021340).

Almost surely, 2^63457720007 is an apocalyptic number.

63457720007 is a deficient number, since it is larger than the sum of its proper divisors (6970536073).

63457720007 is a wasteful number, since it uses less digits than its factorization.

63457720007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091814 (or 5091803 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 63457720007 in words is "sixty-three billion, four hundred fifty-seven million, seven hundred twenty thousand, seven".