2251162653661 has 8 divisors (see below), whose sum is σ = 2252130495264. Its totient is φ = 2250195006960.

The previous prime is 2251162653589. The next prime is 2251162653697. The reversal of 2251162653661 is 1663562611522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2251162653661 - 2⁷ = 2251162653533 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 (2251162633661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25959771 + ... + 26046343.

It is an arithmetic number, because the mean of its divisors is an integer number (281516311908).

Almost surely, 2^{2251162653661} is an apocalyptic number.

It is an amenable number.

2251162653661 is a deficient number, since it is larger than the sum of its proper divisors (967841603).

2251162653661 is an equidigital number, since it uses as much as digits as its factorization.

2251162653661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97451.

The product of its digits is 777600, while the sum is 46.

The spelling of 2251162653661 in words is "two trillion, two hundred fifty-one billion, one hundred sixty-two million, six hundred fifty-three thousand, six hundred sixty-one".