64761370061431 has 2 divisors, whose sum is σ = 64761370061432. Its totient is φ = 64761370061430.

The previous prime is 64761370061389. The next prime is 64761370061467. The reversal of 64761370061431 is 13416007316746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64761370061431 - 2¹¹ = 64761370059383 is a prime.

It is a super-2 number, since 2×64761370061431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64761370064431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32380685030715 + 32380685030716.

It is an arithmetic number, because the mean of its divisors is an integer number (32380685030716).

Almost surely, 2^{64761370061431} is an apocalyptic number.

64761370061431 is a deficient number, since it is larger than the sum of its proper divisors (1).

64761370061431 is an equidigital number, since it uses as much as digits as its factorization.

64761370061431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 64761370061431 in words is "sixty-four trillion, seven hundred sixty-one billion, three hundred seventy million, sixty-one thousand, four hundred thirty-one".