64210874456 has 8 divisors (see below), whose sum is σ = 120395389620. Its totient is φ = 32105437224.

The previous prime is 64210874401. The next prime is 64210874491. The reversal of 64210874456 is 65447801246.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 64210874456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4013179646 + ... + 4013179661.

Almost surely, 2^64210874456 is an apocalyptic number.

It is an amenable number.

64210874456 is a deficient number, since it is larger than the sum of its proper divisors (56184515164).

64210874456 is a wasteful number, since it uses less digits than its factorization.

64210874456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8026359313 (or 8026359309 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 47.

The spelling of 64210874456 in words is "sixty-four billion, two hundred ten million, eight hundred seventy-four thousand, four hundred fifty-six".