64424438457 has 8 divisors (see below), whose sum is σ = 85903051776. Its totient is φ = 42947725392.

The previous prime is 64424438453. The next prime is 64424438539. The reversal of 64424438457 is 75483442446.

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

It is not a de Polignac number, because 64424438457 - 2² = 64424438453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64424438453) 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, 393978 + ... + 532979.

It is an arithmetic number, because the mean of its divisors is an integer number (10737881472).

Almost surely, 2^64424438457 is an apocalyptic number.

It is an amenable number.

64424438457 is a deficient number, since it is larger than the sum of its proper divisors (21478613319).

64424438457 is a wasteful number, since it uses less digits than its factorization.

64424438457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950127.

The product of its digits is 10321920, while the sum is 51.

The spelling of 64424438457 in words is "sixty-four billion, four hundred twenty-four million, four hundred thirty-eight thousand, four hundred fifty-seven".