11270197980 has 96 divisors (see below), whose sum is σ = 35082358080. Its totient is φ = 3003713280.

The previous prime is 11270197973. The next prime is 11270198033. The reversal of 11270197980 is 8979107211.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

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, 1194642 + ... + 1204038.

It is an arithmetic number, because the mean of its divisors is an integer number (365441230).

Almost surely, 2^11270197980 is an apocalyptic number.

11270197980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11270197980 is an abundant number, since it is smaller than the sum of its proper divisors (23812160100).

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

11270197980 is a wasteful number, since it uses less digits than its factorization.

11270197980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11636 (or 11628 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 45.

It can be divided in two parts, 112701 and 97980, that added together give a square (210681 = 459²).

The spelling of 11270197980 in words is "eleven billion, two hundred seventy million, one hundred ninety-seven thousand, nine hundred eighty".