661140600334 has 8 divisors (see below), whose sum is σ = 991731504960. Its totient is φ = 330563432016.

The previous prime is 661140600331. The next prime is 661140600343. The reversal of 661140600334 is 433006041166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 661140600334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661140600331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3312894 + ... + 3506785.

It is an arithmetic number, because the mean of its divisors is an integer number (123966438120).

Almost surely, 2^661140600334 is an apocalyptic number.

661140600334 is a deficient number, since it is larger than the sum of its proper divisors (330590904626).

661140600334 is a wasteful number, since it uses less digits than its factorization.

661140600334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868154.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 661140600334 in words is "six hundred sixty-one billion, one hundred forty million, six hundred thousand, three hundred thirty-four".