64697430371 has 8 divisors (see below), whose sum is σ = 74091751680. Its totient is φ = 55341066888.

The previous prime is 64697430353. The next prime is 64697430377. The reversal of 64697430371 is 17303479646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64697430371 - 2¹⁸ = 64697168227 is a prime.

It is a super-2 number, since 2×64697430371² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64697430377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9485801 + ... + 9492618.

It is an arithmetic number, because the mean of its divisors is an integer number (9261468960).

Almost surely, 2^64697430371 is an apocalyptic number.

64697430371 is a deficient number, since it is larger than the sum of its proper divisors (9394321309).

64697430371 is a wasteful number, since it uses less digits than its factorization.

64697430371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18978913.

The product of its (nonzero) digits is 2286144, while the sum is 50.

The spelling of 64697430371 in words is "sixty-four billion, six hundred ninety-seven million, four hundred thirty thousand, three hundred seventy-one".