1113402399961 has 2 divisors, whose sum is σ = 1113402399962. Its totient is φ = 1113402399960.

The previous prime is 1113402399959. The next prime is 1113402400027. The reversal of 1113402399961 is 1699932043111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018010371225 + 95392028736 = 1008965^2 + 308856^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113402399961 - 2¹ = 1113402399959 is a prime.

It is a super-2 number, since 2×1113402399961² (a number of 25 digits) contains 22 as substring.

Together with 1113402399959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1113402399911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556701199980 + 556701199981.

It is an arithmetic number, because the mean of its divisors is an integer number (556701199981).

Almost surely, 2^{1113402399961} is an apocalyptic number.

It is an amenable number.

1113402399961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113402399961 is an equidigital number, since it uses as much as digits as its factorization.

1113402399961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 1113402399961 in words is "one trillion, one hundred thirteen billion, four hundred two million, three hundred ninety-nine thousand, nine hundred sixty-one".