1109997697536 has 960 divisors, whose sum is σ = 4264845032448. Its totient is φ = 269582598144.

The previous prime is 1109997697483. The next prime is 1109997697537. The reversal of 1109997697536 is 6357967999011.

1109997697536 is a `hidden beast` number, since 1 + 10 + 9 + 9 + 9 + 76 + 9 + 7 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (1109997697537) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 335041416 + ... + 335044728.

Almost surely, 2^{1109997697536} is an apocalyptic number.

1109997697536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1109997697536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132422516224).

1109997697536 is an abundant number, since it is smaller than the sum of its proper divisors (3154847334912).

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

1109997697536 is a wasteful number, since it uses less digits than its factorization.

1109997697536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421 (or 3402 counting only the distinct ones).

The product of its (nonzero) digits is 173604060, while the sum is 72.

The spelling of 1109997697536 in words is "one trillion, one hundred nine billion, nine hundred ninety-seven million, six hundred ninety-seven thousand, five hundred thirty-six".