64880229431 has 4 divisors (see below), whose sum is σ = 64880787000. Its totient is φ = 64879671864.

The previous prime is 64880229373. The next prime is 64880229487. The reversal of 64880229431 is 13492208846.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 13492208846 = 2 ⋅6746104423.

It is a cyclic number.

It is not a de Polignac number, because 64880229431 - 2⁶ = 64880229367 is a prime.

It is a super-2 number, since 2×64880229431² (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 (64880229131) 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, 30581 + ... + 361518.

It is an arithmetic number, because the mean of its divisors is an integer number (16220196750).

Almost surely, 2^64880229431 is an apocalyptic number.

64880229431 is a deficient number, since it is larger than the sum of its proper divisors (557569).

64880229431 is a wasteful number, since it uses less digits than its factorization.

64880229431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557568.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 64880229431 in words is "sixty-four billion, eight hundred eighty million, two hundred twenty-nine thousand, four hundred thirty-one".