11198705580 has 72 divisors (see below), whose sum is σ = 34092191952. Its totient is φ = 2975527296.

The previous prime is 11198705561. The next prime is 11198705641. The reversal of 11198705580 is 8550789111.

11198705580 is a `hidden beast` number, since 1 + 1 + 1 + 98 + 7 + 0 + 558 + 0 = 666.

It is a super-3 number, since 3×11198705580³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62442 + ... + 162161.

It is an arithmetic number, because the mean of its divisors is an integer number (473502666).

Almost surely, 2^11198705580 is an apocalyptic number.

11198705580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11198705580 is an abundant number, since it is smaller than the sum of its proper divisors (22893486372).

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

11198705580 is a wasteful number, since it uses less digits than its factorization.

11198705580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224895 (or 224890 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 45.

The spelling of 11198705580 in words is "eleven billion, one hundred ninety-eight million, seven hundred five thousand, five hundred eighty".