102199490988 has 96 divisors (see below), whose sum is σ = 288672781824. Its totient is φ = 27471787008.

The previous prime is 102199490969. The next prime is 102199490993. The reversal of 102199490988 is 889094991201.

It is a super-2 number, since 2×102199490988² (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 31 ways as a sum of consecutive naturals, for example, 4210495 + ... + 4234697.

It is an arithmetic number, because the mean of its divisors is an integer number (3007008144).

Almost surely, 2^102199490988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102199490988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144336390912).

102199490988 is an abundant number, since it is smaller than the sum of its proper divisors (186473290836).

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

102199490988 is a wasteful number, since it uses less digits than its factorization.

102199490988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27191 (or 27189 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 60.

The spelling of 102199490988 in words is "one hundred two billion, one hundred ninety-nine million, four hundred ninety thousand, nine hundred eighty-eight".