98557491540 has 48 divisors (see below), whose sum is σ = 277613465472. Its totient is φ = 26124617856.

The previous prime is 98557491523. The next prime is 98557491547. The reversal of 98557491540 is 4519475589.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98557491547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4908019 + ... + 4928058.

It is an arithmetic number, because the mean of its divisors is an integer number (5783613864).

Almost surely, 2^98557491540 is an apocalyptic number.

It is an amenable number.

98557491540 is an abundant number, since it is smaller than the sum of its proper divisors (179055973932).

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

98557491540 is a wasteful number, since it uses less digits than its factorization.

98557491540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9836256 (or 9836254 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 57.

The spelling of 98557491540 in words is "ninety-eight billion, five hundred fifty-seven million, four hundred ninety-one thousand, five hundred forty".