656405146461 has 16 divisors (see below), whose sum is σ = 896585296320. Its totient is φ = 426914974080.

The previous prime is 656405146427. The next prime is 656405146471. The reversal of 656405146461 is 164641504656.

It is not a de Polignac number, because 656405146461 - 2³¹ = 654257662813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656405146461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656405146471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4135971 + ... + 4291743.

It is an arithmetic number, because the mean of its divisors is an integer number (56036581020).

Almost surely, 2^656405146461 is an apocalyptic number.

It is an amenable number.

656405146461 is a deficient number, since it is larger than the sum of its proper divisors (240180149859).

656405146461 is a wasteful number, since it uses less digits than its factorization.

656405146461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190076.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 656405146461 in words is "six hundred fifty-six billion, four hundred five million, one hundred forty-six thousand, four hundred sixty-one".