123895627945 has 16 divisors (see below), whose sum is σ = 152724710160. Its totient is φ = 96417644544.

The previous prime is 123895627943. The next prime is 123895627979. The reversal of 123895627945 is 549726598321.

It can be written as a sum of positive squares in 8 ways, for example, as 388365849 + 123507262096 = 19707^2 + 351436^2 .

It is a cyclic number.

It is not a de Polignac number, because 123895627945 - 2¹ = 123895627943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123895627943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 856641 + ... + 990769.

It is an arithmetic number, because the mean of its divisors is an integer number (9545294385).

Almost surely, 2^123895627945 is an apocalyptic number.

It is an amenable number.

123895627945 is a deficient number, since it is larger than the sum of its proper divisors (28829082215).

123895627945 is a wasteful number, since it uses less digits than its factorization.

123895627945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139164.

The product of its digits is 32659200, while the sum is 61.

The spelling of 123895627945 in words is "one hundred twenty-three billion, eight hundred ninety-five million, six hundred twenty-seven thousand, nine hundred forty-five".