1156644451231 has 8 divisors (see below), whose sum is σ = 1222046578800. Its totient is φ = 1091694934080.

The previous prime is 1156644451189. The next prime is 1156644451241. The reversal of 1156644451231 is 1321544466511.

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

It is a cyclic number.

It is not a de Polignac number, because 1156644451231 - 2⁹ = 1156644450719 is a prime.

It is a super-2 number, since 2×1156644451231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156644451241) 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, 113147350 + ... + 113157571.

It is an arithmetic number, because the mean of its divisors is an integer number (152755822350).

Almost surely, 2^{1156644451231} is an apocalyptic number.

1156644451231 is a deficient number, since it is larger than the sum of its proper divisors (65402127569).

1156644451231 is a wasteful number, since it uses less digits than its factorization.

1156644451231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226305209.

The product of its digits is 345600, while the sum is 43.

The spelling of 1156644451231 in words is "one trillion, one hundred fifty-six billion, six hundred forty-four million, four hundred fifty-one thousand, two hundred thirty-one".