151636661 has 8 divisors (see below), whose sum is σ = 165900000. Its totient is φ = 137453040.

The previous prime is 151636649. The next prime is 151636673. The reversal of 151636661 is 166636151.

It is an interprime number because it is at equal distance from previous prime (151636649) and next prime (151636673).

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 151636661 - 2¹⁴ = 151620277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151636691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15911 + ... + 23588.

It is an arithmetic number, because the mean of its divisors is an integer number (20737500).

Almost surely, 2^151636661 is an apocalyptic number.

151636661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

151636661 is a deficient number, since it is larger than the sum of its proper divisors (14263339).

151636661 is a wasteful number, since it uses less digits than its factorization.

151636661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39859.

The product of its digits is 19440, while the sum is 35.

The square root of 151636661 is about 12314.0838473676. The cubic root of 151636661 is about 533.2547560885.

The spelling of 151636661 in words is "one hundred fifty-one million, six hundred thirty-six thousand, six hundred sixty-one".