64630245655407 has 4 divisors (see below), whose sum is σ = 86173660873880. Its totient is φ = 43086830436936.

The previous prime is 64630245655397. The next prime is 64630245655421. The reversal of 64630245655407 is 70455654203646.

It is a happy number.

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

It is not a de Polignac number, because 64630245655407 - 2¹⁵ = 64630245622639 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 (64630245655307) 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, 10771707609232 + ... + 10771707609237.

It is an arithmetic number, because the mean of its divisors is an integer number (21543415218470).

Almost surely, 2^{64630245655407} is an apocalyptic number.

64630245655407 is a deficient number, since it is larger than the sum of its proper divisors (21543415218473).

64630245655407 is a wasteful number, since it uses less digits than its factorization.

64630245655407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21543415218472.

The product of its (nonzero) digits is 72576000, while the sum is 57.

The spelling of 64630245655407 in words is "sixty-four trillion, six hundred thirty billion, two hundred forty-five million, six hundred fifty-five thousand, four hundred seven".