64844774093492 has 12 divisors (see below), whose sum is σ = 113777769850080. Its totient is φ = 32336839850616.

The previous prime is 64844774093467. The next prime is 64844774093501. The reversal of 64844774093492 is 29439047744846.

It is a super-2 number, since 2×64844774093492² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21386797328 + ... + 21386800359.

It is an arithmetic number, because the mean of its divisors is an integer number (9481480820840).

Almost surely, 2^{64844774093492} is an apocalyptic number.

It is an amenable number.

64844774093492 is a deficient number, since it is larger than the sum of its proper divisors (48932995756588).

64844774093492 is a wasteful number, since it uses less digits than its factorization.

64844774093492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42773598070 (or 42773598068 counting only the distinct ones).

The product of its (nonzero) digits is 1170505728, while the sum is 71.

The spelling of 64844774093492 in words is "sixty-four trillion, eight hundred forty-four billion, seven hundred seventy-four million, ninety-three thousand, four hundred ninety-two".