11978970282 has 84 divisors (see below), whose sum is σ = 27456817986. Its totient is φ = 3916829520.

The previous prime is 11978970277. The next prime is 11978970301. The reversal of 11978970282 is 28207987911.

It can be written as a sum of positive squares in only one way, i.e., 11880782001 + 98188281 = 108999^2 + 9909^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 32640063 + ... + 32640429.

Almost surely, 2^11978970282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11978970282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13728408993).

11978970282 is an abundant number, since it is smaller than the sum of its proper divisors (15477847704).

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

11978970282 is an frugal number, since it uses more digits than its factorization.

11978970282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 54.

The spelling of 11978970282 in words is "eleven billion, nine hundred seventy-eight million, nine hundred seventy thousand, two hundred eighty-two".