64920402892801 has 4 divisors (see below), whose sum is σ = 64925931338752. Its totient is φ = 64914874446852.

The previous prime is 64920402892789. The next prime is 64920402892883. The reversal of 64920402892801 is 10829820402946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64920402892801 - 2¹⁷ = 64920402761729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64920402890801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2764205361 + ... + 2764228846.

It is an arithmetic number, because the mean of its divisors is an integer number (16231482834688).

Almost surely, 2^{64920402892801} is an apocalyptic number.

It is an amenable number.

64920402892801 is a deficient number, since it is larger than the sum of its proper divisors (5528445951).

64920402892801 is a wasteful number, since it uses less digits than its factorization.

64920402892801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528445950.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 64920402892801 in words is "sixty-four trillion, nine hundred twenty billion, four hundred two million, eight hundred ninety-two thousand, eight hundred one".