66104434756654 has 32 divisors (see below), whose sum is σ = 119324567577600. Its totient is φ = 26830761420960.

The previous prime is 66104434756637. The next prime is 66104434756681. The reversal of 66104434756654 is 45665743440166.

It is a junction number, because it is equal to n+sod(n) for n = 66104434756592 and 66104434756601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39139702 + ... + 40793689.

It is an arithmetic number, because the mean of its divisors is an integer number (3728892736800).

Almost surely, 2^{66104434756654} is an apocalyptic number.

66104434756654 is a deficient number, since it is larger than the sum of its proper divisors (53220132820946).

66104434756654 is a wasteful number, since it uses less digits than its factorization.

66104434756654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79936528.

The product of its (nonzero) digits is 174182400, while the sum is 61.

The spelling of 66104434756654 in words is "sixty-six trillion, one hundred four billion, four hundred thirty-four million, seven hundred fifty-six thousand, six hundred fifty-four".