11629145947 has 4 divisors (see below), whose sum is σ = 12241206280. Its totient is φ = 11017085616.

The previous prime is 11629145873. The next prime is 11629145977. The reversal of 11629145947 is 74954192611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11629145947 - 2⁷ = 11629145819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11629145947.

It is not an unprimeable number, because it can be changed into a prime (11629145977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306030138 + ... + 306030175.

It is an arithmetic number, because the mean of its divisors is an integer number (3060301570).

Almost surely, 2^11629145947 is an apocalyptic number.

11629145947 is a deficient number, since it is larger than the sum of its proper divisors (612060333).

11629145947 is an equidigital number, since it uses as much as digits as its factorization.

11629145947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612060332.

The product of its digits is 544320, while the sum is 49.

The spelling of 11629145947 in words is "eleven billion, six hundred twenty-nine million, one hundred forty-five thousand, nine hundred forty-seven".