64212294479 has 4 divisors (see below), whose sum is σ = 66426511560. Its totient is φ = 61998077400.

The previous prime is 64212294473. The next prime is 64212294511. The reversal of 64212294479 is 97449221246.

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-64212294479 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 (64212294473) 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, 1107108497 + ... + 1107108554.

It is an arithmetic number, because the mean of its divisors is an integer number (16606627890).

Almost surely, 2^64212294479 is an apocalyptic number.

64212294479 is a deficient number, since it is larger than the sum of its proper divisors (2214217081).

64212294479 is a wasteful number, since it uses less digits than its factorization.

64212294479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214217080.

The product of its digits is 1741824, while the sum is 50.

The spelling of 64212294479 in words is "sixty-four billion, two hundred twelve million, two hundred ninety-four thousand, four hundred seventy-nine".