65457100784129 has 4 divisors (see below), whose sum is σ = 65457121967040. Its totient is φ = 65457079601220.

The previous prime is 65457100784087. The next prime is 65457100784219. The reversal of 65457100784129 is 92148700175456.

It is a happy number.

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 65457100784129 - 2²⁰ = 65457099735553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65457100784429) 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, 4957277 + ... + 12469514.

It is an arithmetic number, because the mean of its divisors is an integer number (16364280491760).

Almost surely, 2^{65457100784129} is an apocalyptic number.

It is an amenable number.

65457100784129 is a deficient number, since it is larger than the sum of its proper divisors (21182911).

65457100784129 is a wasteful number, since it uses less digits than its factorization.

65457100784129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21182910.

The product of its (nonzero) digits is 16934400, while the sum is 59.

The spelling of 65457100784129 in words is "sixty-five trillion, four hundred fifty-seven billion, one hundred million, seven hundred eighty-four thousand, one hundred twenty-nine".