64893430357 has 16 divisors (see below), whose sum is σ = 78083942400. Its totient is φ = 52684173360.

The previous prime is 64893430351. The next prime is 64893430369. The reversal of 64893430357 is 75303439846.

It is not a de Polignac number, because 64893430357 - 2¹⁹ = 64892906069 is a prime.

It is a super-2 number, since 2×64893430357² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64893430351) 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, 604632 + ... + 703822.

It is an arithmetic number, because the mean of its divisors is an integer number (4880246400).

Almost surely, 2^64893430357 is an apocalyptic number.

It is an amenable number.

64893430357 is a deficient number, since it is larger than the sum of its proper divisors (13190512043).

64893430357 is a wasteful number, since it uses less digits than its factorization.

64893430357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104136.

The product of its (nonzero) digits is 6531840, while the sum is 52.

The spelling of 64893430357 in words is "sixty-four billion, eight hundred ninety-three million, four hundred thirty thousand, three hundred fifty-seven".