11978129352 has 64 divisors (see below), whose sum is σ = 34951403520. Its totient is φ = 3349505088.

The previous prime is 11978129311. The next prime is 11978129363. The reversal of 11978129352 is 25392187911.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750598 + ... + 766389.

It is an arithmetic number, because the mean of its divisors is an integer number (546115680).

Almost surely, 2^11978129352 is an apocalyptic number.

11978129352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11978129352 is an abundant number, since it is smaller than the sum of its proper divisors (22973274168).

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

11978129352 is a wasteful number, since it uses less digits than its factorization.

11978129352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517050 (or 1517046 counting only the distinct ones).

The product of its digits is 272160, while the sum is 48.

The spelling of 11978129352 in words is "eleven billion, nine hundred seventy-eight million, one hundred twenty-nine thousand, three hundred fifty-two".