1823557481481 has 16 divisors (see below), whose sum is σ = 2467760226624. Its totient is φ = 1197530752704.

The previous prime is 1823557481477. The next prime is 1823557481491. The reversal of 1823557481481 is 1841847553281.

It is not a de Polignac number, because 1823557481481 - 2² = 1823557481477 is a prime.

It is a super-2 number, since 2×1823557481481² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1823557481411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10712671 + ... + 10881563.

It is an arithmetic number, because the mean of its divisors is an integer number (154235014164).

Almost surely, 2^{1823557481481} is an apocalyptic number.

It is an amenable number.

1823557481481 is a deficient number, since it is larger than the sum of its proper divisors (644202745143).

1823557481481 is a wasteful number, since it uses less digits than its factorization.

1823557481481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222680.

The product of its digits is 8601600, while the sum is 57.

The spelling of 1823557481481 in words is "one trillion, eight hundred twenty-three billion, five hundred fifty-seven million, four hundred eighty-one thousand, four hundred eighty-one".