64951534457 has 4 divisors (see below), whose sum is σ = 67775514240. Its totient is φ = 62127554676.

The previous prime is 64951534451. The next prime is 64951534471. The reversal of 64951534457 is 75443515946.

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 64951534457 - 2⁴ = 64951534441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64951534399 and 64951534408.

It is not an unprimeable number, because it can be changed into a prime (64951534451) 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, 1411989857 + ... + 1411989902.

It is an arithmetic number, because the mean of its divisors is an integer number (16943878560).

Almost surely, 2^64951534457 is an apocalyptic number.

It is an amenable number.

64951534457 is a deficient number, since it is larger than the sum of its proper divisors (2823979783).

64951534457 is a wasteful number, since it uses less digits than its factorization.

64951534457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2823979782.

The product of its digits is 9072000, while the sum is 53.

The spelling of 64951534457 in words is "sixty-four billion, nine hundred fifty-one million, five hundred thirty-four thousand, four hundred fifty-seven".