665432747554 has 16 divisors (see below), whose sum is σ = 999607025088. Its totient is φ = 332230494672.

The previous prime is 665432747537. The next prime is 665432747569. The reversal of 665432747554 is 455747234566.

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, 24977589 + ... + 25004215.

It is an arithmetic number, because the mean of its divisors is an integer number (62475439068).

Almost surely, 2^665432747554 is an apocalyptic number.

665432747554 is a deficient number, since it is larger than the sum of its proper divisors (334174277534).

665432747554 is a wasteful number, since it uses less digits than its factorization.

665432747554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44409.

The product of its digits is 84672000, while the sum is 58.

The spelling of 665432747554 in words is "six hundred sixty-five billion, four hundred thirty-two million, seven hundred forty-seven thousand, five hundred fifty-four".