1113103209978 has 24 divisors (see below), whose sum is σ = 2501046719808. Its totient is φ = 371034403164.

The previous prime is 1113103209971. The next prime is 1113103209979. The reversal of 1113103209978 is 8799023013111.

It is a happy number.

1113103209978 is a `hidden beast` number, since 1 + 1 + 1 + 310 + 320 + 9 + 9 + 7 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (1113103209971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1145167426 + ... + 1145168397.

It is an arithmetic number, because the mean of its divisors is an integer number (104210279992).

Almost surely, 2^{1113103209978} is an apocalyptic number.

1113103209978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1113103209978 is an abundant number, since it is smaller than the sum of its proper divisors (1387943509830).

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

1113103209978 is an equidigital number, since it uses as much as digits as its factorization.

1113103209978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290335840 (or 2290335828 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 1113103209978 in words is "one trillion, one hundred thirteen billion, one hundred three million, two hundred nine thousand, nine hundred seventy-eight".