6581891941023 has 96 divisors (see below), whose sum is σ = 11043017955840. Its totient is φ = 3464742677760.

The previous prime is 6581891941003. The next prime is 6581891941087. The reversal of 6581891941023 is 3201491981856.

It is a happy number.

It is not a de Polignac number, because 6581891941023 - 2⁶ = 6581891940959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6581891941003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 179898390 + ... + 179934972.

It is an arithmetic number, because the mean of its divisors is an integer number (115031437040).

Almost surely, 2^{6581891941023} is an apocalyptic number.

6581891941023 is a deficient number, since it is larger than the sum of its proper divisors (4461126014817).

6581891941023 is a wasteful number, since it uses less digits than its factorization.

6581891941023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38397 (or 38390 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 57.

The spelling of 6581891941023 in words is "six trillion, five hundred eighty-one billion, eight hundred ninety-one million, nine hundred forty-one thousand, twenty-three".