64212294473 has 2 divisors, whose sum is σ = 64212294474. Its totient is φ = 64212294472.

The previous prime is 64212294469. The next prime is 64212294511. The reversal of 64212294473 is 37449221246.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63779987209 + 432307264 = 252547^2 + 20792^2 .

It is a cyclic number.

It is not a de Polignac number, because 64212294473 - 2² = 64212294469 is a prime.

It is a super-2 number, since 2×64212294473² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64212294173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32106147236 + 32106147237.

It is an arithmetic number, because the mean of its divisors is an integer number (32106147237).

Almost surely, 2^64212294473 is an apocalyptic number.

It is an amenable number.

64212294473 is a deficient number, since it is larger than the sum of its proper divisors (1).

64212294473 is an equidigital number, since it uses as much as digits as its factorization.

64212294473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 44.

The spelling of 64212294473 in words is "sixty-four billion, two hundred twelve million, two hundred ninety-four thousand, four hundred seventy-three".