66364652542 has 16 divisors (see below), whose sum is σ = 101991878352. Its totient is φ = 32367628480.

The previous prime is 66364652539. The next prime is 66364652551. The reversal of 66364652542 is 24525646366.

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, 454488 + ... + 582484.

It is an arithmetic number, because the mean of its divisors is an integer number (6374492397).

Almost surely, 2^66364652542 is an apocalyptic number.

66364652542 is a deficient number, since it is larger than the sum of its proper divisors (35627225810).

66364652542 is a wasteful number, since it uses less digits than its factorization.

66364652542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134363.

The product of its digits is 6220800, while the sum is 49.

The spelling of 66364652542 in words is "sixty-six billion, three hundred sixty-four million, six hundred fifty-two thousand, five hundred forty-two".