64748563907 has 4 divisors (see below), whose sum is σ = 68156383080. Its totient is φ = 61340744736.

The previous prime is 64748563903. The next prime is 64748563921. The reversal of 64748563907 is 70936584746.

64748563907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 64748563907 - 2² = 64748563903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64748563903) 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, 1703909558 + ... + 1703909595.

It is an arithmetic number, because the mean of its divisors is an integer number (17039095770).

Almost surely, 2^64748563907 is an apocalyptic number.

64748563907 is a deficient number, since it is larger than the sum of its proper divisors (3407819173).

64748563907 is a wasteful number, since it uses less digits than its factorization.

64748563907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407819172.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 64748563907 in words is "sixty-four billion, seven hundred forty-eight million, five hundred sixty-three thousand, nine hundred seven".