116251661 has 16 divisors (see below), whose sum is σ = 127195200. Its totient is φ = 105815808.

The previous prime is 116251649. The next prime is 116251673. The reversal of 116251661 is 166152611.

It is an interprime number because it is at equal distance from previous prime (116251649) and next prime (116251673).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116251661 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 (116251061) 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, 78950 + ... + 80408.

It is an arithmetic number, because the mean of its divisors is an integer number (7949700).

Almost surely, 2^116251661 is an apocalyptic number.

It is an amenable number.

116251661 is a deficient number, since it is larger than the sum of its proper divisors (10943539).

116251661 is a wasteful number, since it uses less digits than its factorization.

116251661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1628.

The product of its digits is 2160, while the sum is 29.

The square root of 116251661 is about 10782.0063531794. The cubic root of 116251661 is about 488.0523282707.

The spelling of 116251661 in words is "one hundred sixteen million, two hundred fifty-one thousand, six hundred sixty-one".