18071856437374 has 16 divisors (see below), whose sum is σ = 27126561243600. Its totient is φ = 9029670203520.

The previous prime is 18071856437347. The next prime is 18071856437377. The reversal of 18071856437374 is 47373465817081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18071856437377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44045857 + ... + 44454259.

It is an arithmetic number, because the mean of its divisors is an integer number (1695410077725).

Almost surely, 2^{18071856437374} is an apocalyptic number.

18071856437374 is a deficient number, since it is larger than the sum of its proper divisors (9054704806226).

18071856437374 is a wasteful number, since it uses less digits than its factorization.

18071856437374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423675.

The product of its (nonzero) digits is 94832640, while the sum is 64.

The spelling of 18071856437374 in words is "eighteen trillion, seventy-one billion, eight hundred fifty-six million, four hundred thirty-seven thousand, three hundred seventy-four".