99124780540 has 24 divisors (see below), whose sum is σ = 208221678000. Its totient is φ = 39638552448.

The previous prime is 99124780519. The next prime is 99124780561. The reversal of 99124780540 is 4508742199.

It is an interprime number because it is at equal distance from previous prime (99124780519) and next prime (99124780561).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638257 + ... + 778216.

It is an arithmetic number, because the mean of its divisors is an integer number (8675903250).

Almost surely, 2^99124780540 is an apocalyptic number.

It is an amenable number.

99124780540 is an abundant number, since it is smaller than the sum of its proper divisors (109096897460).

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

99124780540 is a wasteful number, since it uses less digits than its factorization.

99124780540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419981 (or 1419979 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 99124780540 in words is "ninety-nine billion, one hundred twenty-four million, seven hundred eighty thousand, five hundred forty".