151786638145 has 16 divisors (see below), whose sum is σ = 189401121360. Its totient is φ = 116634599424.

The previous prime is 151786638139. The next prime is 151786638161. The reversal of 151786638145 is 541836687151.

It can be written as a sum of positive squares in 8 ways, for example, as 29311836849 + 122474801296 = 171207^2 + 349964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151786638145 is a prime.

It is a super-2 number, since 2×151786638145² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2683944 + ... + 2739913.

It is an arithmetic number, because the mean of its divisors is an integer number (11837570085).

Almost surely, 2^151786638145 is an apocalyptic number.

It is an amenable number.

151786638145 is a deficient number, since it is larger than the sum of its proper divisors (37614483215).

151786638145 is a wasteful number, since it uses less digits than its factorization.

151786638145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424084.

The product of its digits is 4838400, while the sum is 55.

The spelling of 151786638145 in words is "one hundred fifty-one billion, seven hundred eighty-six million, six hundred thirty-eight thousand, one hundred forty-five".