64199410015 has 16 divisors (see below), whose sum is σ = 82970683488. Its totient is φ = 47405771136.

The previous prime is 64199410007. The next prime is 64199410021. The reversal of 64199410015 is 51001499146.

It is a cyclic number.

It is not a de Polignac number, because 64199410015 - 2³ = 64199410007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64199410015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1891777 + ... + 1925413.

It is an arithmetic number, because the mean of its divisors is an integer number (5185667718).

Almost surely, 2^64199410015 is an apocalyptic number.

64199410015 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64199410015 is a deficient number, since it is larger than the sum of its proper divisors (18771273473).

64199410015 is a wasteful number, since it uses less digits than its factorization.

64199410015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63018.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 64199410015 in words is "sixty-four billion, one hundred ninety-nine million, four hundred ten thousand, fifteen".