1815252986047 has 16 divisors (see below), whose sum is σ = 1877236641792. Its totient is φ = 1753486191360.

The previous prime is 1815252986039. The next prime is 1815252986051. The reversal of 1815252986047 is 7406892525181.

It is a cyclic number.

It is not a de Polignac number, because 1815252986047 - 2³ = 1815252986039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1815252985982 and 1815252986000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1815252984047) 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, 43274598 + ... + 43316524.

It is an arithmetic number, because the mean of its divisors is an integer number (117327290112).

Almost surely, 2^{1815252986047} is an apocalyptic number.

1815252986047 is a deficient number, since it is larger than the sum of its proper divisors (61983655745).

1815252986047 is a wasteful number, since it uses less digits than its factorization.

1815252986047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44478.

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 1815252986047 in words is "one trillion, eight hundred fifteen billion, two hundred fifty-two million, nine hundred eighty-six thousand, forty-seven".