64734421941 has 64 divisors (see below), whose sum is σ = 122158540800. Its totient is φ = 32982743808.

The previous prime is 64734421937. The next prime is 64734421943. The reversal of 64734421941 is 14912443746.

It is not a de Polignac number, because 64734421941 - 2² = 64734421937 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64734421943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 469155 + ... + 591248.

It is an arithmetic number, because the mean of its divisors is an integer number (1908727200).

Almost surely, 2^64734421941 is an apocalyptic number.

It is an amenable number.

64734421941 is a deficient number, since it is larger than the sum of its proper divisors (57424118859).

64734421941 is a wasteful number, since it uses less digits than its factorization.

64734421941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060455 (or 1060449 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 64734421941 in words is "sixty-four billion, seven hundred thirty-four million, four hundred twenty-one thousand, nine hundred forty-one".