948215993261 has 12 divisors (see below), whose sum is σ = 980392234140. Its totient is φ = 916994332800.

The previous prime is 948215993243. The next prime is 948215993299. The reversal of 948215993261 is 162399512849.

It can be written as a sum of positive squares in 2 ways, for example, as 753196601161 + 195019392100 = 867869^2 + 441610^2 .

It is not a de Polignac number, because 948215993261 - 2¹⁰ = 948215992237 is a prime.

It is a super-2 number, since 2×948215993261² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 948215993261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948215993161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2351996 + ... + 2725493.

It is an arithmetic number, because the mean of its divisors is an integer number (81699352845).

Almost surely, 2^948215993261 is an apocalyptic number.

It is an amenable number.

948215993261 is a deficient number, since it is larger than the sum of its proper divisors (32176240879).

948215993261 is a wasteful number, since it uses less digits than its factorization.

948215993261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5077676 (or 5077633 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 59.

The spelling of 948215993261 in words is "nine hundred forty-eight billion, two hundred fifteen million, nine hundred ninety-three thousand, two hundred sixty-one".