115911109450 has 24 divisors (see below), whose sum is σ = 216536146380. Its totient is φ = 46161974400.

The previous prime is 115911109439. The next prime is 115911109459. The reversal of 115911109450 is 54901119511.

It can be written as a sum of positive squares in 6 ways, for example, as 99049307841 + 16861801609 = 314721^2 + 129853^2 .

It is not an unprimeable number, because it can be changed into a prime (115911109459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5050171 + ... + 5073070.

Almost surely, 2^115911109450 is an apocalyptic number.

115911109450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115911109450 is a deficient number, since it is larger than the sum of its proper divisors (100625036930).

115911109450 is a wasteful number, since it uses less digits than its factorization.

115911109450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10123482 (or 10123477 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 37.

The spelling of 115911109450 in words is "one hundred fifteen billion, nine hundred eleven million, one hundred nine thousand, four hundred fifty".