64124999999 has 8 divisors (see below), whose sum is σ = 64283584512. Its totient is φ = 63966478680.

The previous prime is 64124999987. The next prime is 64125000011. The reversal of 64124999999 is 99999942146.

It is an interprime number because it is at equal distance from previous prime (64124999987) and next prime (64125000011).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64124999999 is a prime.

It is a super-2 number, since 2×64124999999² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

64124999999 is a modest number, since divided by 999999 gives 64124 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64124999599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504834 + ... + 2530304.

It is an arithmetic number, because the mean of its divisors is an integer number (8035448064).

Almost surely, 2^64124999999 is an apocalyptic number.

64124999999 is a deficient number, since it is larger than the sum of its proper divisors (158584513).

64124999999 is a wasteful number, since it uses less digits than its factorization.

64124999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31597.

The product of its digits is 102036672, while the sum is 71.

The spelling of 64124999999 in words is "sixty-four billion, one hundred twenty-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".