151971591434 has 24 divisors (see below), whose sum is σ = 246987187020. Its totient is φ = 70128807840.

The previous prime is 151971591427. The next prime is 151971591463. The reversal of 151971591434 is 434195179151.

It can be written as a sum of positive squares in 6 ways, for example, as 4442622409 + 147528969025 = 66653^2 + 384095^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25838174 + ... + 25844054.

Almost surely, 2^151971591434 is an apocalyptic number.

151971591434 is a deficient number, since it is larger than the sum of its proper divisors (95015595586).

151971591434 is an frugal number, since it uses more digits than its factorization.

151971591434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11803 (or 5896 counting only the distinct ones).

The product of its digits is 680400, while the sum is 50.

The spelling of 151971591434 in words is "one hundred fifty-one billion, nine hundred seventy-one million, five hundred ninety-one thousand, four hundred thirty-four".