1149553991436 has 96 divisors (see below), whose sum is σ = 2715045359040. Its totient is φ = 378530955264.

The previous prime is 1149553991393. The next prime is 1149553991437. The reversal of 1149553991436 is 6341993559411.

It is a super-2 number, since 2×1149553991436² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1149553991436.

It is not an unprimeable number, because it can be changed into a prime (1149553991437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 944579500 + ... + 944580716.

It is an arithmetic number, because the mean of its divisors is an integer number (28281722490).

Almost surely, 2^{1149553991436} is an apocalyptic number.

It is an amenable number.

1149553991436 is an abundant number, since it is smaller than the sum of its proper divisors (1565491367604).

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

1149553991436 is a wasteful number, since it uses less digits than its factorization.

1149553991436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3081 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 60.

The spelling of 1149553991436 in words is "one trillion, one hundred forty-nine billion, five hundred fifty-three million, nine hundred ninety-one thousand, four hundred thirty-six".