81514134374 has 8 divisors (see below), whose sum is σ = 122547210120. Its totient is φ = 40665064336.

The previous prime is 81514134347. The next prime is 81514134433. The reversal of 81514134374 is 47343141518.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46000319 + ... + 46002090.

It is an arithmetic number, because the mean of its divisors is an integer number (15318401265).

Almost surely, 2^81514134374 is an apocalyptic number.

81514134374 is a deficient number, since it is larger than the sum of its proper divisors (41033075746).

81514134374 is a wasteful number, since it uses less digits than its factorization.

81514134374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92002854.

The product of its digits is 161280, while the sum is 41.

The spelling of 81514134374 in words is "eighty-one billion, five hundred fourteen million, one hundred thirty-four thousand, three hundred seventy-four".