11423432947 has 36 divisors (see below), whose sum is σ = 12797903160. Its totient is φ = 10167742080.

The previous prime is 11423432939. The next prime is 11423432981. The reversal of 11423432947 is 74923432411.

11423432947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11423432947 - 2³ = 11423432939 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11423412947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24996343 + ... + 24996799.

It is an arithmetic number, because the mean of its divisors is an integer number (355497310).

Almost surely, 2^11423432947 is an apocalyptic number.

11423432947 is a deficient number, since it is larger than the sum of its proper divisors (1374470213).

11423432947 is an equidigital number, since it uses as much as digits as its factorization.

11423432947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 544 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The spelling of 11423432947 in words is "eleven billion, four hundred twenty-three million, four hundred thirty-two thousand, nine hundred forty-seven".