151565373545561 has 4 divisors (see below), whose sum is σ = 158155172395392. Its totient is φ = 144975574695732.

The previous prime is 151565373545539. The next prime is 151565373545567. The reversal of 151565373545561 is 165545373565151.

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 151565373545561 - 2⁶ = 151565373545497 is a prime.

It is a super-2 number, since 2×151565373545561² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151565373545494 and 151565373545503.

It is not an unprimeable number, because it can be changed into a prime (151565373545567) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3294899424881 + ... + 3294899424926.

It is an arithmetic number, because the mean of its divisors is an integer number (39538793098848).

Almost surely, 2^{151565373545561} is an apocalyptic number.

It is an amenable number.

151565373545561 is a deficient number, since it is larger than the sum of its proper divisors (6589798849831).

151565373545561 is an equidigital number, since it uses as much as digits as its factorization.

151565373545561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6589798849830.

The product of its digits is 141750000, while the sum is 62.

The spelling of 151565373545561 in words is "one hundred fifty-one trillion, five hundred sixty-five billion, three hundred seventy-three million, five hundred forty-five thousand, five hundred sixty-one".