2662156563841 has 4 divisors (see below), whose sum is σ = 2699651726784. Its totient is φ = 2624661400900.

The previous prime is 2662156563839. The next prime is 2662156563851. The reversal of 2662156563841 is 1483656512662.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2662156563841 - 2¹ = 2662156563839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2662156563851) 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, 18747581365 + ... + 18747581506.

It is an arithmetic number, because the mean of its divisors is an integer number (674912931696).

Almost surely, 2^{2662156563841} is an apocalyptic number.

It is an amenable number.

2662156563841 is a deficient number, since it is larger than the sum of its proper divisors (37495162943).

2662156563841 is an equidigital number, since it uses as much as digits as its factorization.

2662156563841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37495162942.

The product of its digits is 12441600, while the sum is 55.

The spelling of 2662156563841 in words is "two trillion, six hundred sixty-two billion, one hundred fifty-six million, five hundred sixty-three thousand, eight hundred forty-one".