151466890665021 has 4 divisors (see below), whose sum is σ = 201955854220032. Its totient is φ = 100977927110012.

The previous prime is 151466890664977. The next prime is 151466890665043. The reversal of 151466890665021 is 120566098664151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 151466890665021 - 2¹⁴ = 151466890648637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151466890665521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25244481777501 + ... + 25244481777506.

It is an arithmetic number, because the mean of its divisors is an integer number (50488963555008).

Almost surely, 2^{151466890665021} is an apocalyptic number.

It is an amenable number.

151466890665021 is a deficient number, since it is larger than the sum of its proper divisors (50488963555011).

151466890665021 is an equidigital number, since it uses as much as digits as its factorization.

151466890665021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50488963555010.

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 151466890665021 in words is "one hundred fifty-one trillion, four hundred sixty-six billion, eight hundred ninety million, six hundred sixty-five thousand, twenty-one".