11309999956 has 6 divisors (see below), whose sum is σ = 19792499930. Its totient is φ = 5654999976.

The previous prime is 11309999951. The next prime is 11309999957. The reversal of 11309999956 is 65999990311.

It can be written as a sum of positive squares in only one way, i.e., 9591068356 + 1718931600 = 97934^2 + 41460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11309999894 and 11309999903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11309999951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1413749991 + ... + 1413749998.

Almost surely, 2^11309999956 is an apocalyptic number.

It is an amenable number.

11309999956 is a deficient number, since it is larger than the sum of its proper divisors (8482499974).

11309999956 is a wasteful number, since it uses less digits than its factorization.

11309999956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827499993 (or 2827499991 counting only the distinct ones).

The product of its (nonzero) digits is 5314410, while the sum is 61.

The spelling of 11309999956 in words is "eleven billion, three hundred nine million, nine hundred ninety-nine thousand, nine hundred fifty-six".