11312129978 has 8 divisors (see below), whose sum is σ = 17861257920. Its totient is φ = 5358377340.

The previous prime is 11312129977. The next prime is 11312130029. The reversal of 11312129978 is 87992121311.

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

It is not an unprimeable number, because it can be changed into a prime (11312129977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148843778 + ... + 148843853.

It is an arithmetic number, because the mean of its divisors is an integer number (2232657240).

Almost surely, 2^11312129978 is an apocalyptic number.

11312129978 is a deficient number, since it is larger than the sum of its proper divisors (6549127942).

11312129978 is a wasteful number, since it uses less digits than its factorization.

11312129978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297687652.

The product of its digits is 54432, while the sum is 44.

The spelling of 11312129978 in words is "eleven billion, three hundred twelve million, one hundred twenty-nine thousand, nine hundred seventy-eight".