64439902711 has 2 divisors, whose sum is σ = 64439902712. Its totient is φ = 64439902710.

The previous prime is 64439902693. The next prime is 64439902717. The reversal of 64439902711 is 11720993446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64439902711 - 2³⁵ = 30080164343 is a prime.

It is a super-2 number, since 2×64439902711² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64439902717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32219951355 + 32219951356.

It is an arithmetic number, because the mean of its divisors is an integer number (32219951356).

Almost surely, 2^64439902711 is an apocalyptic number.

64439902711 is a deficient number, since it is larger than the sum of its proper divisors (1).

64439902711 is an equidigital number, since it uses as much as digits as its factorization.

64439902711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 64439902711 in words is "sixty-four billion, four hundred thirty-nine million, nine hundred two thousand, seven hundred eleven".