11172772015 has 8 divisors (see below), whose sum is σ = 13412126448. Its totient is φ = 8935017600.

The previous prime is 11172771979. The next prime is 11172772033. The reversal of 11172772015 is 51027727111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11172772015 - 2¹¹ = 11172769967 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 384586 + ... + 412615.

It is an arithmetic number, because the mean of its divisors is an integer number (1676515806).

Almost surely, 2^11172772015 is an apocalyptic number.

11172772015 is a deficient number, since it is larger than the sum of its proper divisors (2239354433).

11172772015 is an equidigital number, since it uses as much as digits as its factorization.

11172772015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800009.

The product of its (nonzero) digits is 6860, while the sum is 34.

The spelling of 11172772015 in words is "eleven billion, one hundred seventy-two million, seven hundred seventy-two thousand, fifteen".