11774977998 has 16 divisors (see below), whose sum is σ = 26914235520. Its totient is φ = 3364279416.

The previous prime is 11774977979. The next prime is 11774977999. The reversal of 11774977998 is 89977947711.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11774977999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140178268 + ... + 140178351.

It is an arithmetic number, because the mean of its divisors is an integer number (1682139720).

Almost surely, 2^11774977998 is an apocalyptic number.

11774977998 is an abundant number, since it is smaller than the sum of its proper divisors (15139257522).

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

11774977998 is a wasteful number, since it uses less digits than its factorization.

11774977998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280356631.

The product of its digits is 56010528, while the sum is 69.

The spelling of 11774977998 in words is "eleven billion, seven hundred seventy-four million, nine hundred seventy-seven thousand, nine hundred ninety-eight".