81347401474 has 8 divisors (see below), whose sum is σ = 122244177168. Its totient is φ = 40599342420.

The previous prime is 81347401469. The next prime is 81347401501. The reversal of 81347401474 is 47410474318.

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

It is a self number, because there is not a number n which added to its sum of digits gives 81347401474.

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, 37177792 + ... + 37179979.

It is an arithmetic number, because the mean of its divisors is an integer number (15280522146).

Almost surely, 2^81347401474 is an apocalyptic number.

81347401474 is a deficient number, since it is larger than the sum of its proper divisors (40896775694).

81347401474 is a wasteful number, since it uses less digits than its factorization.

81347401474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74358320.

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 81347401474 in words is "eighty-one billion, three hundred forty-seven million, four hundred one thousand, four hundred seventy-four".