2001531762229 has 4 divisors (see below), whose sum is σ = 2005086881376. Its totient is φ = 1997976643084.

The previous prime is 2001531762199. The next prime is 2001531762239. The reversal of 2001531762229 is 9222671351002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2001531762229 - 2¹³ = 2001531754037 is a prime.

It is a super-2 number, since 2×2001531762229² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001531762191 and 2001531762200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001531762239) 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, 1777558729 + ... + 1777559854.

It is an arithmetic number, because the mean of its divisors is an integer number (501271720344).

Almost surely, 2^{2001531762229} is an apocalyptic number.

It is an amenable number.

2001531762229 is a deficient number, since it is larger than the sum of its proper divisors (3555119147).

2001531762229 is an equidigital number, since it uses as much as digits as its factorization.

2001531762229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555119146.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 2001531762229 in words is "two trillion, one billion, five hundred thirty-one million, seven hundred sixty-two thousand, two hundred twenty-nine".