1123099036956 has 72 divisors (see below), whose sum is σ = 3135828982160. Its totient is φ = 345556716192.

The previous prime is 1123099036933. The next prime is 1123099036963. The reversal of 1123099036956 is 6596309903211.

1123099036956 is a `hidden beast` number, since 112 + 30 + 9 + 90 + 369 + 56 = 666.

It is a super-2 number, since 2×1123099036956² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39695191 + ... + 39723473.

Almost surely, 2^{1123099036956} is an apocalyptic number.

It is an amenable number.

1123099036956 is an abundant number, since it is smaller than the sum of its proper divisors (2012729945204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123099036956 is an frugal number, since it uses more digits than its factorization.

1123099036956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56592 (or 28301 counting only the distinct ones).

The product of its (nonzero) digits is 2361960, while the sum is 54.

The spelling of 1123099036956 in words is "one trillion, one hundred twenty-three billion, ninety-nine million, thirty-six thousand, nine hundred fifty-six".