151001606565 has 40 divisors (see below), whose sum is σ = 286606983960. Its totient is φ = 75796881408.

The previous prime is 151001606513. The next prime is 151001606573. The reversal of 151001606565 is 565606100151.

It can be written as a sum of positive squares in 4 ways, for example, as 73792092609 + 77209513956 = 271647^2 + 277866^2 .

It is not a de Polignac number, because 151001606565 - 2¹⁵ = 151001573797 is a prime.

It is a super-2 number, since 2×151001606565² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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 39 ways as a sum of consecutive naturals, for example, 10959100 + ... + 10972869.

It is an arithmetic number, because the mean of its divisors is an integer number (7165174599).

Almost surely, 2^151001606565 is an apocalyptic number.

151001606565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151001606565 is a deficient number, since it is larger than the sum of its proper divisors (135605377395).

151001606565 is a wasteful number, since it uses less digits than its factorization.

151001606565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21932003 (or 21931994 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 151001606565 in words is "one hundred fifty-one billion, one million, six hundred six thousand, five hundred sixty-five".