64516519742 has 16 divisors (see below), whose sum is σ = 96888878352. Its totient is φ = 32220249600.

The previous prime is 64516519729. The next prime is 64516519763. The reversal of 64516519742 is 24791561546.

It is a congruent 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, 12316748 + ... + 12321984.

It is an arithmetic number, because the mean of its divisors is an integer number (6055554897).

Almost surely, 2^64516519742 is an apocalyptic number.

64516519742 is a deficient number, since it is larger than the sum of its proper divisors (32372358610).

64516519742 is a wasteful number, since it uses less digits than its factorization.

64516519742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323.

The product of its digits is 1814400, while the sum is 50.

The spelling of 64516519742 in words is "sixty-four billion, five hundred sixteen million, five hundred nineteen thousand, seven hundred forty-two".