11718279001 has 27 divisors (see below), whose sum is σ = 13965888573. Its totient is φ = 9820530720.

The previous prime is 11718278987. The next prime is 11718279011. The reversal of 11718279001 is 10097281711.

The square root of 11718279001 is 108251.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 843960601 + 10874318400 = 29051^2 + 104280^2 .

It is not a de Polignac number, because 11718279001 - 2¹⁷ = 11718147929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11718279011) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15479515 + ... + 15480271.

Almost surely, 2^11718279001 is an apocalyptic number.

11718279001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11718279001 is the 108251-st square number.

11718279001 is the 54126-th centered octagonal number.

It is an amenable number.

11718279001 is a deficient number, since it is larger than the sum of its proper divisors (2247609572).

11718279001 is an frugal number, since it uses more digits than its factorization.

11718279001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 781 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 37.

Multiplying 11718279001 by its product of nonzero digits (7056), we get a square (82684176631056 = 9093084²).

The spelling of 11718279001 in words is "eleven billion, seven hundred eighteen million, two hundred seventy-nine thousand, one".