149656393628569 has 27 divisors (see below), whose sum is σ = 153316250602623. Its totient is φ = 146083392927072.

The previous prime is 149656393628537. The next prime is 149656393628587. The reversal of 149656393628569 is 965826393656941.

The square root of 149656393628569 is 12233413.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 84952259472025 + 64704134156544 = 9216955^2 + 8043888^2 .

It is not a de Polignac number, because 149656393628569 - 2⁵ = 149656393628537 is a prime.

It is a super-2 number, since 2×149656393628569² (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 = 149656393628492 and 149656393628501.

It is not an unprimeable number, because it can be changed into a prime (149656393608569) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 91983031534 + ... + 91983033160.

It is an arithmetic number, because the mean of its divisors is an integer number (5678379651949).

Almost surely, 2^{149656393628569} is an apocalyptic number.

149656393628569 is the 12233413-rd square number.

149656393628569 is the 6116707-th centered octagonal number.

It is an amenable number.

149656393628569 is a deficient number, since it is larger than the sum of its proper divisors (3659856974054).

149656393628569 is an frugal number, since it uses more digits than its factorization.

149656393628569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606 (or 1803 counting only the distinct ones).

The product of its digits is 13604889600, while the sum is 82.

The spelling of 149656393628569 in words is "one hundred forty-nine trillion, six hundred fifty-six billion, three hundred ninety-three million, six hundred twenty-eight thousand, five hundred sixty-nine".