64992700143 has 18 divisors (see below), whose sum is σ = 107292877224. Its totient is φ = 37137529512.

The previous prime is 64992700079. The next prime is 64992700177. The reversal of 64992700143 is 34100729946.

It is a happy number.

It is not a de Polignac number, because 64992700143 - 2⁶ = 64992700079 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64992700043) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2007438 + ... + 2039556.

Almost surely, 2^64992700143 is an apocalyptic number.

64992700143 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

64992700143 is a deficient number, since it is larger than the sum of its proper divisors (42300177081).

64992700143 is an frugal number, since it uses more digits than its factorization.

64992700143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64251 (or 32129 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 64992700143 in words is "sixty-four billion, nine hundred ninety-two million, seven hundred thousand, one hundred forty-three".