5815861005381 has 32 divisors (see below), whose sum is σ = 8980650762240. Its totient is φ = 3279012437376.

The previous prime is 5815861005373. The next prime is 5815861005391. The reversal of 5815861005381 is 1835001685185.

It is not a de Polignac number, because 5815861005381 - 2³ = 5815861005373 is a prime.

It is a super-2 number, since 2×5815861005381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5815861005391) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 1189225 + ... + 3611921.

It is an arithmetic number, because the mean of its divisors is an integer number (280645336320).

Almost surely, 2^{5815861005381} is an apocalyptic number.

It is an amenable number.

5815861005381 is a deficient number, since it is larger than the sum of its proper divisors (3164789756859).

5815861005381 is a wasteful number, since it uses less digits than its factorization.

5815861005381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2424233.

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 5815861005381 in words is "five trillion, eight hundred fifteen billion, eight hundred sixty-one million, five thousand, three hundred eighty-one".