99405144554125 has 32 divisors (see below), whose sum is σ = 130765125254400. Its totient is φ = 75235853332800.

The previous prime is 99405144554113. The next prime is 99405144554129. The reversal of 99405144554125 is 52145544150499.

It is not a de Polignac number, because 99405144554125 - 2²¹ = 99405142456973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99405144554125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99405144554129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26809465 + ... + 30291214.

It is an arithmetic number, because the mean of its divisors is an integer number (4086410164200).

Almost surely, 2^{99405144554125} is an apocalyptic number.

99405144554125 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

99405144554125 is a deficient number, since it is larger than the sum of its proper divisors (31359980700275).

99405144554125 is a wasteful number, since it uses less digits than its factorization.

99405144554125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57101446 (or 57101436 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 58.

The spelling of 99405144554125 in words is "ninety-nine trillion, four hundred five billion, one hundred forty-four million, five hundred fifty-four thousand, one hundred twenty-five".