11708731980 has 576 divisors, whose sum is σ = 43243683840. Its totient is φ = 2618542080.

The previous prime is 11708731973. The next prime is 11708732017. The reversal of 11708731980 is 8913780711.

It is a happy number.

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 191 ways as a sum of consecutive naturals, for example, 92194677 + ... + 92194803.

It is an arithmetic number, because the mean of its divisors is an integer number (75075840).

Almost surely, 2^11708731980 is an apocalyptic number.

11708731980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11708731980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21621841920).

11708731980 is an abundant number, since it is smaller than the sum of its proper divisors (31534951860).

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

11708731980 is a wasteful number, since it uses less digits than its factorization.

11708731980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The spelling of 11708731980 in words is "eleven billion, seven hundred eight million, seven hundred thirty-one thousand, nine hundred eighty".