64294996805 has 16 divisors (see below), whose sum is σ = 85769209344. Its totient is φ = 45947787840.

The previous prime is 64294996793. The next prime is 64294996807. The reversal of 64294996805 is 50869949246.

It is a happy number.

It is not a de Polignac number, because 64294996805 - 2²⁸ = 64026561349 is a prime.

It is a super-2 number, since 2×64294996805² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64294996807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15952079 + ... + 15956108.

It is an arithmetic number, because the mean of its divisors is an integer number (5360575584).

Almost surely, 2^64294996805 is an apocalyptic number.

64294996805 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64294996805 is a deficient number, since it is larger than the sum of its proper divisors (21474212539).

64294996805 is a wasteful number, since it uses less digits than its factorization.

64294996805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31908236.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 64294996805 in words is "sixty-four billion, two hundred ninety-four million, nine hundred ninety-six thousand, eight hundred five".