66736131734 has 16 divisors (see below), whose sum is σ = 105412274880. Its totient is φ = 31600021320.

The previous prime is 66736131703. The next prime is 66736131793. The reversal of 66736131734 is 43713163766.

66736131734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66736131734² (a number of 22 digits) contains 22 as substring.

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, 225332 + ... + 429239.

It is an arithmetic number, because the mean of its divisors is an integer number (6588267180).

Almost surely, 2^66736131734 is an apocalyptic number.

66736131734 is a deficient number, since it is larger than the sum of its proper divisors (38676143146).

66736131734 is a wasteful number, since it uses less digits than its factorization.

66736131734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657275.

The product of its digits is 1143072, while the sum is 47.

The spelling of 66736131734 in words is "sixty-six billion, seven hundred thirty-six million, one hundred thirty-one thousand, seven hundred thirty-four".