64879700047 has 4 divisors (see below), whose sum is σ = 65979356040. Its totient is φ = 63780044056.

The previous prime is 64879700033. The next prime is 64879700071. The reversal of 64879700047 is 74000797846.

64879700047 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 64879700047 - 2¹¹ = 64879697999 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64879699967 and 64879700003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64879700027) 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, 549827908 + ... + 549828025.

It is an arithmetic number, because the mean of its divisors is an integer number (16494839010).

Almost surely, 2^64879700047 is an apocalyptic number.

64879700047 is a deficient number, since it is larger than the sum of its proper divisors (1099655993).

64879700047 is a wasteful number, since it uses less digits than its factorization.

64879700047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099655992.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 64879700047 in words is "sixty-four billion, eight hundred seventy-nine million, seven hundred thousand, forty-seven".