64555455494 has 4 divisors (see below), whose sum is σ = 96833183244. Its totient is φ = 32277727746.

The previous prime is 64555455493. The next prime is 64555455571. The reversal of 64555455494 is 49455455546.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64555455493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16138863872 + ... + 16138863875.

It is an arithmetic number, because the mean of its divisors is an integer number (24208295811).

Almost surely, 2^64555455494 is an apocalyptic number.

64555455494 is a deficient number, since it is larger than the sum of its proper divisors (32277727750).

64555455494 is a wasteful number, since it uses less digits than its factorization.

64555455494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32277727749.

The product of its digits is 43200000, while the sum is 56.

The spelling of 64555455494 in words is "sixty-four billion, five hundred fifty-five million, four hundred fifty-five thousand, four hundred ninety-four".