11679989477 has 8 divisors (see below), whose sum is σ = 12582162264. Its totient is φ = 10778347008.

The previous prime is 11679989471. The next prime is 11679989483. The reversal of 11679989477 is 77498997611.

It is a Cunningham number, because it is equal to 108074²+1.

It is an interprime number because it is at equal distance from previous prime (11679989471) and next prime (11679989483).

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 11679989476 = 1^2 + 108074^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11679989477 - 2⁶ = 11679989413 is a prime.

It is a super-4 number, since 4×11679989477⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11679989471) 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, 86228 + ... + 175485.

It is an arithmetic number, because the mean of its divisors is an integer number (1572770283).

Almost surely, 2^11679989477 is an apocalyptic number.

It is an amenable number.

11679989477 is a deficient number, since it is larger than the sum of its proper divisors (902172787).

11679989477 is a wasteful number, since it uses less digits than its factorization.

11679989477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265159.

The product of its digits is 48009024, while the sum is 68.

The spelling of 11679989477 in words is "eleven billion, six hundred seventy-nine million, nine hundred eighty-nine thousand, four hundred seventy-seven".