1111640087978 has 8 divisors (see below), whose sum is σ = 1905668722272. Its totient is φ = 476417180556.

The previous prime is 1111640087977. The next prime is 1111640087981. The reversal of 1111640087978 is 8797800461111.

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 (1111640087977) 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, 39701431700 + ... + 39701431727.

It is an arithmetic number, because the mean of its divisors is an integer number (238208590284).

Almost surely, 2^{1111640087978} is an apocalyptic number.

1111640087978 is a deficient number, since it is larger than the sum of its proper divisors (794028634294).

1111640087978 is an equidigital number, since it uses as much as digits as its factorization.

1111640087978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79402863436.

The product of its (nonzero) digits is 677376, while the sum is 53.

The spelling of 1111640087978 in words is "one trillion, one hundred eleven billion, six hundred forty million, eighty-seven thousand, nine hundred seventy-eight".