661462401205 has 8 divisors (see below), whose sum is σ = 828265963392. Its totient is φ = 506162533008.

The previous prime is 661462401199. The next prime is 661462401227. The reversal of 661462401205 is 502104264166.

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

It is a cyclic number.

It is not a de Polignac number, because 661462401205 - 2¹⁹ = 661461876917 is a prime.

It is a Duffinian 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, 2875923369 + ... + 2875923598.

It is an arithmetic number, because the mean of its divisors is an integer number (103533245424).

Almost surely, 2^661462401205 is an apocalyptic number.

It is an amenable number.

661462401205 is a deficient number, since it is larger than the sum of its proper divisors (166803562187).

661462401205 is a wasteful number, since it uses less digits than its factorization.

661462401205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751846995.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 661462401205 in words is "six hundred sixty-one billion, four hundred sixty-two million, four hundred one thousand, two hundred five".