151121643766 has 4 divisors (see below), whose sum is σ = 226682465652. Its totient is φ = 75560821882.

The previous prime is 151121643697. The next prime is 151121643767. The reversal of 151121643766 is 667346121151.

151121643766 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151121643767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37780410940 + ... + 37780410943.

It is an arithmetic number, because the mean of its divisors is an integer number (56670616413).

Almost surely, 2^151121643766 is an apocalyptic number.

151121643766 is a deficient number, since it is larger than the sum of its proper divisors (75560821886).

151121643766 is an equidigital number, since it uses as much as digits as its factorization.

151121643766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75560821885.

The product of its digits is 181440, while the sum is 43.

The spelling of 151121643766 in words is "one hundred fifty-one billion, one hundred twenty-one million, six hundred forty-three thousand, seven hundred sixty-six".