64293919837 has 12 divisors (see below), whose sum is σ = 78042665376. Its totient is φ = 52713026520.

The previous prime is 64293919819. The next prime is 64293919849. The reversal of 64293919837 is 73891939246.

It is not a de Polignac number, because 64293919837 - 2¹¹ = 64293917789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64293919237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28523239 + ... + 28525492.

It is an arithmetic number, because the mean of its divisors is an integer number (6503555448).

Almost surely, 2^64293919837 is an apocalyptic number.

It is an amenable number.

64293919837 is a deficient number, since it is larger than the sum of its proper divisors (13748745539).

64293919837 is a wasteful number, since it uses less digits than its factorization.

64293919837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57048768 (or 57048761 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 61.

The spelling of 64293919837 in words is "sixty-four billion, two hundred ninety-three million, nine hundred nineteen thousand, eight hundred thirty-seven".