4491936430261 has 16 divisors (see below), whose sum is σ = 5204095527168. Its totient is φ = 3797393443200.

The previous prime is 4491936430249. The next prime is 4491936430273. The reversal of 4491936430261 is 1620346391944.

It is an interprime number because it is at equal distance from previous prime (4491936430249) and next prime (4491936430273).

It is not a de Polignac number, because 4491936430261 - 2¹⁹ = 4491935905973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4491936430199 and 4491936430208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491936430231) 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, 26810931 + ... + 26977951.

It is an arithmetic number, because the mean of its divisors is an integer number (325255970448).

Almost surely, 2^{4491936430261} is an apocalyptic number.

It is an amenable number.

4491936430261 is a deficient number, since it is larger than the sum of its proper divisors (712159096907).

4491936430261 is a wasteful number, since it uses less digits than its factorization.

4491936430261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219732.

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 4491936430261 in words is "four trillion, four hundred ninety-one billion, nine hundred thirty-six million, four hundred thirty thousand, two hundred sixty-one".