40661913598 has 4 divisors (see below), whose sum is σ = 60992870400. Its totient is φ = 20330956798.

The previous prime is 40661913587. The next prime is 40661913619. The reversal of 40661913598 is 89531916604.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165478398 + ... + 10165478401.

It is an arithmetic number, because the mean of its divisors is an integer number (15248217600).

Almost surely, 2^40661913598 is an apocalyptic number.

40661913598 is a deficient number, since it is larger than the sum of its proper divisors (20330956802).

40661913598 is a wasteful number, since it uses less digits than its factorization.

40661913598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20330956801.

The product of its (nonzero) digits is 1399680, while the sum is 52.

The spelling of 40661913598 in words is "forty billion, six hundred sixty-one million, nine hundred thirteen thousand, five hundred ninety-eight".