112869899806978 has 4 divisors (see below), whose sum is σ = 169304849710470. Its totient is φ = 56434949903488.

The previous prime is 112869899806969. The next prime is 112869899806981. The reversal of 112869899806978 is 879608998968211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79320701251089 + 33549198555889 = 8906217^2 + 5792167^2 .

It is a super-2 number, since 2×112869899806978² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 112869899806892 and 112869899806901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28217474951743 + ... + 28217474951746.

Almost surely, 2^{112869899806978} is an apocalyptic number.

112869899806978 is a deficient number, since it is larger than the sum of its proper divisors (56434949903492).

112869899806978 is an equidigital number, since it uses as much as digits as its factorization.

112869899806978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56434949903491.

The product of its (nonzero) digits is 13544423424, while the sum is 91.

The spelling of 112869899806978 in words is "one hundred twelve trillion, eight hundred sixty-nine billion, eight hundred ninety-nine million, eight hundred six thousand, nine hundred seventy-eight".