109800901549 has 2 divisors, whose sum is σ = 109800901550. Its totient is φ = 109800901548.

The previous prime is 109800901513. The next prime is 109800901583. The reversal of 109800901549 is 945109008901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95925239524 + 13875662025 = 309718^2 + 117795^2 .

It is a cyclic number.

It is not a de Polignac number, because 109800901549 - 2²¹ = 109798804397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109800901499 and 109800901508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109800908549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54900450774 + 54900450775.

It is an arithmetic number, because the mean of its divisors is an integer number (54900450775).

Almost surely, 2^109800901549 is an apocalyptic number.

It is an amenable number.

109800901549 is a deficient number, since it is larger than the sum of its proper divisors (1).

109800901549 is an equidigital number, since it uses as much as digits as its factorization.

109800901549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 46.

The spelling of 109800901549 in words is "one hundred nine billion, eight hundred million, nine hundred one thousand, five hundred forty-nine".