658160635441 has 9 divisors (see below), whose sum is σ = 670856891691. Its totient is φ = 645700324152.

The previous prime is 658160635387. The next prime is 658160635487. The reversal of 658160635441 is 144536061856.

The square root of 658160635441 is 811271.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 474466104225 + 183694531216 = 688815^2 + 428596^2 .

It is not a de Polignac number, because 658160635441 - 2¹³ = 658160627249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (658167635441) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42989710 + ... + 43005016.

Almost surely, 2^658160635441 is an apocalyptic number.

658160635441 is the 811271-st square number.

658160635441 is the 405636-th centered octagonal number.

It is an amenable number.

658160635441 is a deficient number, since it is larger than the sum of its proper divisors (12696256250).

658160635441 is an frugal number, since it uses more digits than its factorization.

658160635441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30720 (or 15360 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 49.

Multiplying 658160635441 by its sum of digits (49), we get a square (32249871136609 = 5678897²).

The spelling of 658160635441 in words is "six hundred fifty-eight billion, one hundred sixty million, six hundred thirty-five thousand, four hundred forty-one".