109554977149 has 4 divisors (see below), whose sum is σ = 109900576764. Its totient is φ = 109209377536.

The previous prime is 109554977143. The next prime is 109554977153. The reversal of 109554977149 is 941779455901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14378408100 + 95176569049 = 119910^2 + 308507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109554977149 is a prime.

It is a super-4 number, since 4×109554977149⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109554977143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172799332 + ... + 172799965.

It is an arithmetic number, because the mean of its divisors is an integer number (27475144191).

Almost surely, 2^109554977149 is an apocalyptic number.

It is an amenable number.

109554977149 is a deficient number, since it is larger than the sum of its proper divisors (345599615).

109554977149 is an equidigital number, since it uses as much as digits as its factorization.

109554977149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345599614.

The product of its (nonzero) digits is 14288400, while the sum is 61.

The spelling of 109554977149 in words is "one hundred nine billion, five hundred fifty-four million, nine hundred seventy-seven thousand, one hundred forty-nine".