2200157661 has 16 divisors (see below), whose sum is σ = 3175248384. Its totient is φ = 1347065664.

The previous prime is 2200157657. The next prime is 2200157681. The reversal of 2200157661 is 1667510022.

It is not a de Polignac number, because 2200157661 - 2² = 2200157657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200157681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135501 + ... + 150866.

It is an arithmetic number, because the mean of its divisors is an integer number (198453024).

Almost surely, 2^2200157661 is an apocalyptic number.

It is an amenable number.

2200157661 is a deficient number, since it is larger than the sum of its proper divisors (975090723).

2200157661 is a wasteful number, since it uses less digits than its factorization.

2200157661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286580.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 2200157661 is about 46905.8382400315. The cubic root of 2200157661 is about 1300.6225146771.

Adding to 2200157661 its reverse (1667510022), we get a palindrome (3867667683).

The spelling of 2200157661 in words is "two billion, two hundred million, one hundred fifty-seven thousand, six hundred sixty-one".