109597069440 has 160 divisors (see below), whose sum is σ = 391391108460. Its totient is φ = 29225871360.

The previous prime is 109597069423. The next prime is 109597069453. The reversal of 109597069440 is 44960795901.

It is a happy number.

109597069440 is a `hidden beast` number, since 1 + 0 + 9 + 597 + 0 + 6 + 9 + 4 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 98862451776 + 10734617664 = 314424^2 + 103608^2 .

It is a tau number, because it is divible by the number of its divisors (160).

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1005231 + ... + 1108910.

Almost surely, 2^109597069440 is an apocalyptic number.

109597069440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109597069440 is an abundant number, since it is smaller than the sum of its proper divisors (281794039020).

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

109597069440 is an equidigital number, since it uses as much as digits as its factorization.

109597069440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114172 (or 2114151 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 109597069440 in words is "one hundred nine billion, five hundred ninety-seven million, sixty-nine thousand, four hundred forty".