11602786261 has 4 divisors (see below), whose sum is σ = 12657585024. Its totient is φ = 10547987500.

The previous prime is 11602786199. The next prime is 11602786289. The reversal of 11602786261 is 16268720611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11602786261 - 2⁹ = 11602785749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11602786561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527399365 + ... + 527399386.

It is an arithmetic number, because the mean of its divisors is an integer number (3164396256).

Almost surely, 2^11602786261 is an apocalyptic number.

11602786261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11602786261 is a deficient number, since it is larger than the sum of its proper divisors (1054798763).

11602786261 is a wasteful number, since it uses less digits than its factorization.

11602786261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054798762.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 11602786261 in words is "eleven billion, six hundred two million, seven hundred eighty-six thousand, two hundred sixty-one".