66536340374 has 16 divisors (see below), whose sum is σ = 114149599488. Its totient is φ = 28493749032.

The previous prime is 66536340337. The next prime is 66536340413. The reversal of 66536340374 is 47304363566.

It is a Curzon number.

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, 1799834 + ... + 1836429.

It is an arithmetic number, because the mean of its divisors is an integer number (7134349968).

Almost surely, 2^66536340374 is an apocalyptic number.

66536340374 is a deficient number, since it is larger than the sum of its proper divisors (47613259114).

66536340374 is a wasteful number, since it uses less digits than its factorization.

66536340374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3637579.

The product of its (nonzero) digits is 3265920, while the sum is 47.

The spelling of 66536340374 in words is "sixty-six billion, five hundred thirty-six million, three hundred forty thousand, three hundred seventy-four".