11623512945 has 32 divisors (see below), whose sum is σ = 20671127424. Its totient is φ = 5529305600.

The previous prime is 11623512931. The next prime is 11623512947. The reversal of 11623512945 is 54921532611.

It is a happy number.

It is not a de Polignac number, because 11623512945 - 2¹² = 11623508849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11623512947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 655836 + ... + 673325.

It is an arithmetic number, because the mean of its divisors is an integer number (645972732).

Almost surely, 2^11623512945 is an apocalyptic number.

11623512945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11623512945 is a deficient number, since it is larger than the sum of its proper divisors (9047614479).

11623512945 is a wasteful number, since it uses less digits than its factorization.

11623512945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329233.

The product of its digits is 64800, while the sum is 39.

The spelling of 11623512945 in words is "eleven billion, six hundred twenty-three million, five hundred twelve thousand, nine hundred forty-five".