64615742002 has 16 divisors (see below), whose sum is σ = 111513268800. Its totient is φ = 27506604528.

The previous prime is 64615741991. The next prime is 64615742029. The reversal of 64615742002 is 20024751646.

It is a super-2 number, since 2×64615742002² (a number of 22 digits) contains 22 as substring.

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, 15485868 + ... + 15490039.

It is an arithmetic number, because the mean of its divisors is an integer number (6969579300).

Almost surely, 2^64615742002 is an apocalyptic number.

64615742002 is a deficient number, since it is larger than the sum of its proper divisors (46897526798).

64615742002 is a wasteful number, since it uses less digits than its factorization.

64615742002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30976065.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 64615742002 in words is "sixty-four billion, six hundred fifteen million, seven hundred forty-two thousand, two".