64774052143 has 8 divisors (see below), whose sum is σ = 66873744896. Its totient is φ = 62674997400.

The previous prime is 64774052107. The next prime is 64774052191. The reversal of 64774052143 is 34125047746.

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

It is a cyclic number.

It is not a de Polignac number, because 64774052143 - 2²⁵ = 64740497711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64774052143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64774053143) 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, 51280 + ... + 363562.

It is an arithmetic number, because the mean of its divisors is an integer number (8359218112).

Almost surely, 2^64774052143 is an apocalyptic number.

64774052143 is a deficient number, since it is larger than the sum of its proper divisors (2099692753).

64774052143 is a wasteful number, since it uses less digits than its factorization.

64774052143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319005.

The product of its (nonzero) digits is 564480, while the sum is 43.

Adding to 64774052143 its reverse (34125047746), we get a palindrome (98899099889).

The spelling of 64774052143 in words is "sixty-four billion, seven hundred seventy-four million, fifty-two thousand, one hundred forty-three".