921441433156 has 6 divisors (see below), whose sum is σ = 1612522508030. Its totient is φ = 460720716576.

The previous prime is 921441433147. The next prime is 921441433181. The reversal of 921441433156 is 651334144129.

It can be written as a sum of positive squares in only one way, i.e., 687214472256 + 234226960900 = 828984^2 + 483970^2 .

It is a super-2 number, since 2×921441433156² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 115180179141 + ... + 115180179148.

Almost surely, 2^921441433156 is an apocalyptic number.

It is an amenable number.

921441433156 is a deficient number, since it is larger than the sum of its proper divisors (691081074874).

921441433156 is a wasteful number, since it uses less digits than its factorization.

921441433156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230360358293 (or 230360358291 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The spelling of 921441433156 in words is "nine hundred twenty-one billion, four hundred forty-one million, four hundred thirty-three thousand, one hundred fifty-six".