98538091557 has 8 divisors (see below), whose sum is σ = 131404457760. Its totient is φ = 65681893200.

The previous prime is 98538091529. The next prime is 98538091633. The reversal of 98538091557 is 75519083589.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 98538091557 - 2¹¹ = 98538089509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 98538091557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98538091507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519319 + ... + 2558132.

It is an arithmetic number, because the mean of its divisors is an integer number (16425557220).

Almost surely, 2^98538091557 is an apocalyptic number.

It is an amenable number.

98538091557 is a deficient number, since it is larger than the sum of its proper divisors (32866366203).

98538091557 is a wasteful number, since it uses less digits than its factorization.

98538091557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5083923.

The product of its (nonzero) digits is 13608000, while the sum is 60.

The spelling of 98538091557 in words is "ninety-eight billion, five hundred thirty-eight million, ninety-one thousand, five hundred fifty-seven".