63706745051 has 4 divisors (see below), whose sum is σ = 63739704432. Its totient is φ = 63673785672.

The previous prime is 63706745041. The next prime is 63706745099. The reversal of 63706745051 is 15054760736.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63706745051 is a prime.

It is a super-2 number, since 2×63706745051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63706744993 and 63706745011.

It is not an unprimeable number, because it can be changed into a prime (63706745041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16476791 + ... + 16480656.

It is an arithmetic number, because the mean of its divisors is an integer number (15934926108).

Almost surely, 2^63706745051 is an apocalyptic number.

63706745051 is a deficient number, since it is larger than the sum of its proper divisors (32959381).

63706745051 is a wasteful number, since it uses less digits than its factorization.

63706745051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32959380.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 63706745051 in words is "sixty-three billion, seven hundred six million, seven hundred forty-five thousand, fifty-one".