123262138845 has 12 divisors (see below), whose sum is σ = 213654374076. Its totient is φ = 65739807360.

The previous prime is 123262138841. The next prime is 123262138847. The reversal of 123262138845 is 548831262321.

123262138845 is a `hidden beast` number, since 1 + 2 + 3 + 262 + 1 + 388 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16083819684 + 107178319161 = 126822^2 + 327381^2 .

It is not a de Polignac number, because 123262138845 - 2² = 123262138841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2739158641 = 123262138845 / (1 + 2 + 3 + 2 + 6 + 2 + 1 + 3 + 8 + 8 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 123262138845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123262138841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1369579276 + ... + 1369579365.

It is an arithmetic number, because the mean of its divisors is an integer number (17804531173).

Almost surely, 2^123262138845 is an apocalyptic number.

123262138845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123262138845 is a deficient number, since it is larger than the sum of its proper divisors (90392235231).

123262138845 is a wasteful number, since it uses less digits than its factorization.

123262138845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2739158652 (or 2739158649 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 123262138845 in words is "one hundred twenty-three billion, two hundred sixty-two million, one hundred thirty-eight thousand, eight hundred forty-five".