151553445891 has 4 divisors (see below), whose sum is σ = 202071261192. Its totient is φ = 101035630592.

The previous prime is 151553445821. The next prime is 151553445893. The reversal of 151553445891 is 198544355151.

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

It is a cyclic number.

It is not a de Polignac number, because 151553445891 - 2⁷ = 151553445763 is a prime.

It is a super-2 number, since 2×151553445891² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151553445893) 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, 25258907646 + ... + 25258907651.

It is an arithmetic number, because the mean of its divisors is an integer number (50517815298).

Almost surely, 2^151553445891 is an apocalyptic number.

151553445891 is a deficient number, since it is larger than the sum of its proper divisors (50517815301).

151553445891 is an equidigital number, since it uses as much as digits as its factorization.

151553445891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50517815300.

The product of its digits is 2160000, while the sum is 51.

The spelling of 151553445891 in words is "one hundred fifty-one billion, five hundred fifty-three million, four hundred forty-five thousand, eight hundred ninety-one".