64199879995 has 8 divisors (see below), whose sum is σ = 78831480816. Its totient is φ = 50165487456.

The previous prime is 64199879987. The next prime is 64199880029. The reversal of 64199879995 is 59997899146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64199879995 - 2³ = 64199879987 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149301832 + ... + 149302261.

It is an arithmetic number, because the mean of its divisors is an integer number (9853935102).

Almost surely, 2^64199879995 is an apocalyptic number.

64199879995 is a deficient number, since it is larger than the sum of its proper divisors (14631600821).

64199879995 is a wasteful number, since it uses less digits than its factorization.

64199879995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298604141.

The product of its digits is 396809280, while the sum is 76.

The spelling of 64199879995 in words is "sixty-four billion, one hundred ninety-nine million, eight hundred seventy-nine thousand, nine hundred ninety-five".