1136699277921 has 27 divisors (see below), whose sum is σ = 1647587354803. Its totient is φ = 755183159520.

The previous prime is 1136699277913. The next prime is 1136699277937. The reversal of 1136699277921 is 1297729966311.

The square root of 1136699277921 is 1066161.

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

It can be written as a sum of positive squares in only one way, i.e., 2985420321 + 1133713857600 = 54639^2 + 1064760^2 .

It is not a de Polignac number, because 1136699277921 - 2³ = 1136699277913 is a prime.

It is a super-2 number, since 2×1136699277921² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1136699777921) 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, 1493691181 + ... + 1493691941.

Almost surely, 2^{1136699277921} is an apocalyptic number.

1136699277921 is the 1066161-st square number.

1136699277921 is the 533081-st centered octagonal number.

It is an amenable number.

1136699277921 is a deficient number, since it is larger than the sum of its proper divisors (510888076882).

1136699277921 is an frugal number, since it uses more digits than its factorization.

1136699277921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 1231 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 63.

The spelling of 1136699277921 in words is "one trillion, one hundred thirty-six billion, six hundred ninety-nine million, two hundred seventy-seven thousand, nine hundred twenty-one".