261646253701202 has 16 divisors (see below), whose sum is σ = 413130425339040. Its totient is φ = 123936270641568.

The previous prime is 261646253701193. The next prime is 261646253701243. The reversal of 261646253701202 is 202107352646162.

It is a super-2 number, since 2×261646253701202² (a number of 30 digits) contains 22 as substring.

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, 36336008 + ... + 42937139.

It is an arithmetic number, because the mean of its divisors is an integer number (25820651583690).

Almost surely, 2^{261646253701202} is an apocalyptic number.

261646253701202 is a deficient number, since it is larger than the sum of its proper divisors (151484171637838).

261646253701202 is a wasteful number, since it uses less digits than its factorization.

261646253701202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79360025.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 261646253701202 in words is "two hundred sixty-one trillion, six hundred forty-six billion, two hundred fifty-three million, seven hundred one thousand, two hundred two".