64992700144 has 20 divisors (see below), whose sum is σ = 125927420040. Its totient is φ = 32495301440.

The previous prime is 64992700079. The next prime is 64992700177. The reversal of 64992700144 is 44100729946.

It is a junction number, because it is equal to n+sod(n) for n = 64992700094 and 64992700103.

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, 763767 + ... + 844585.

It is an arithmetic number, because the mean of its divisors is an integer number (6296371002).

Almost surely, 2^64992700144 is an apocalyptic number.

It is an amenable number.

64992700144 is a deficient number, since it is larger than the sum of its proper divisors (60934719896).

64992700144 is a wasteful number, since it uses less digits than its factorization.

64992700144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131088 (or 131082 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 64992700144 in words is "sixty-four billion, nine hundred ninety-two million, seven hundred thousand, one hundred forty-four".