64049969297 has 4 divisors (see below), whose sum is σ = 65005939056. Its totient is φ = 63093999540.

The previous prime is 64049969237. The next prime is 64049969341. The reversal of 64049969297 is 79296994046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64049969297 - 2¹⁰ = 64049968273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64049969237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477984779 + ... + 477984912.

It is an arithmetic number, because the mean of its divisors is an integer number (16251484764).

Almost surely, 2^64049969297 is an apocalyptic number.

64049969297 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

64049969297 is a deficient number, since it is larger than the sum of its proper divisors (955969759).

64049969297 is an equidigital number, since it uses as much as digits as its factorization.

64049969297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955969758.

The product of its (nonzero) digits is 52907904, while the sum is 65.

The spelling of 64049969297 in words is "sixty-four billion, forty-nine million, nine hundred sixty-nine thousand, two hundred ninety-seven".