11629971553 has 8 divisors (see below), whose sum is σ = 11684961288. Its totient is φ = 11575025664.

The previous prime is 11629971547. The next prime is 11629971593. The reversal of 11629971553 is 35517992611.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 514064929 + 11115906624 = 22673^2 + 105432^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11629971553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11629971497 and 11629971506.

It is not an unprimeable number, because it can be changed into a prime (11629971593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 600225 + ... + 619297.

It is an arithmetic number, because the mean of its divisors is an integer number (1460620161).

Almost surely, 2^11629971553 is an apocalyptic number.

It is an amenable number.

11629971553 is a deficient number, since it is larger than the sum of its proper divisors (54989735).

11629971553 is a wasteful number, since it uses less digits than its factorization.

11629971553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21923.

The product of its digits is 510300, while the sum is 49.

The spelling of 11629971553 in words is "eleven billion, six hundred twenty-nine million, nine hundred seventy-one thousand, five hundred fifty-three".