2136665031061 has 4 divisors (see below), whose sum is σ = 2330907306624. Its totient is φ = 1942422755500.

The previous prime is 2136665031043. The next prime is 2136665031079. The reversal of 2136665031061 is 1601305666312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2136665031043) and next prime (2136665031079).

It is a cyclic number.

It is not a de Polignac number, because 2136665031061 - 2⁷ = 2136665030933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2136665031161) 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, 97121137765 + ... + 97121137786.

It is an arithmetic number, because the mean of its divisors is an integer number (582726826656).

Almost surely, 2^{2136665031061} is an apocalyptic number.

It is an amenable number.

2136665031061 is a deficient number, since it is larger than the sum of its proper divisors (194242275563).

2136665031061 is a wasteful number, since it uses less digits than its factorization.

2136665031061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194242275562.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 2136665031061 in words is "two trillion, one hundred thirty-six billion, six hundred sixty-five million, thirty-one thousand, sixty-one".