900111011109979 has 2 divisors, whose sum is σ = 900111011109980. Its totient is φ = 900111011109978.

The previous prime is 900111011109971. The next prime is 900111011110013. The reversal of 900111011109979 is 979901110111009.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 900111011109979 - 2³ = 900111011109971 is a prime.

It is not a weakly prime, because it can be changed into another prime (900111011109971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450055505554989 + 450055505554990.

It is an arithmetic number, because the mean of its divisors is an integer number (450055505554990).

Almost surely, 2^{900111011109979} is an apocalyptic number.

900111011109979 is a deficient number, since it is larger than the sum of its proper divisors (1).

900111011109979 is an equidigital number, since it uses as much as digits as its factorization.

900111011109979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45927, while the sum is 49.

The spelling of 900111011109979 in words is "nine hundred trillion, one hundred eleven billion, eleven million, one hundred nine thousand, nine hundred seventy-nine".