1165622031401 has 4 divisors (see below), whose sum is σ = 1187614899972. Its totient is φ = 1143629162832.

The previous prime is 1165622031383. The next prime is 1165622031491. The reversal of 1165622031401 is 1041302265611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1060331516176 + 105290515225 = 1029724^2 + 324485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165622031401 - 2¹⁴ = 1165622015017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165622031491) 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, 10996434206 + ... + 10996434311.

It is an arithmetic number, because the mean of its divisors is an integer number (296903724993).

Almost surely, 2^{1165622031401} is an apocalyptic number.

It is an amenable number.

1165622031401 is a deficient number, since it is larger than the sum of its proper divisors (21992868571).

1165622031401 is an equidigital number, since it uses as much as digits as its factorization.

1165622031401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21992868570.

The product of its (nonzero) digits is 8640, while the sum is 32.

The spelling of 1165622031401 in words is "one trillion, one hundred sixty-five billion, six hundred twenty-two million, thirty-one thousand, four hundred one".