261676151 has 16 divisors (see below), whose sum is σ = 305596800. Its totient is φ = 221536800.

The previous prime is 261676133. The next prime is 261676157. The reversal of 261676151 is 151676162.

It is a cyclic number.

It is not a de Polignac number, because 261676151 - 2¹⁸ = 261414007 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 (261676157) 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, 1721 + ... + 22941.

It is an arithmetic number, because the mean of its divisors is an integer number (19099800).

Almost surely, 2^261676151 is an apocalyptic number.

261676151 is a deficient number, since it is larger than the sum of its proper divisors (43920649).

261676151 is a wasteful number, since it uses less digits than its factorization.

261676151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21310.

The product of its digits is 15120, while the sum is 35.

The square root of 261676151 is about 16176.4072339936. The cubic root of 261676151 is about 639.6190367838.

The spelling of 261676151 in words is "two hundred sixty-one million, six hundred seventy-six thousand, one hundred fifty-one".