98799536640 has 160 divisors (see below), whose sum is σ = 360971360640. Its totient is φ = 22582738944.

The previous prime is 98799536623. The next prime is 98799536663. The reversal of 98799536640 is 4663599789.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×98799536640² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 865135 + ... + 972654.

It is an arithmetic number, because the mean of its divisors is an integer number (2256071004).

Almost surely, 2^98799536640 is an apocalyptic number.

It is an amenable number.

98799536640 is an abundant number, since it is smaller than the sum of its proper divisors (262171824000).

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

98799536640 is a wasteful number, since it uses less digits than its factorization.

98799536640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837822 (or 1837806 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 66.

The spelling of 98799536640 in words is "ninety-eight billion, seven hundred ninety-nine million, five hundred thirty-six thousand, six hundred forty".