11772155713 has 4 divisors (see below), whose sum is σ = 11774766420. Its totient is φ = 11769545008.

The previous prime is 11772155657. The next prime is 11772155723. The reversal of 11772155713 is 31755127711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17909824 + 11754245889 = 4232^2 + 108417^2 .

It is a cyclic number.

It is not a de Polignac number, because 11772155713 - 2¹³ = 11772147521 is a prime.

It is a super-2 number, since 2×11772155713² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11772155723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298578 + ... + 1307611.

It is an arithmetic number, because the mean of its divisors is an integer number (2943691605).

Almost surely, 2^11772155713 is an apocalyptic number.

It is an amenable number.

11772155713 is a deficient number, since it is larger than the sum of its proper divisors (2610707).

11772155713 is an equidigital number, since it uses as much as digits as its factorization.

11772155713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610706.

The product of its digits is 51450, while the sum is 40.

The spelling of 11772155713 in words is "eleven billion, seven hundred seventy-two million, one hundred fifty-five thousand, seven hundred thirteen".