81027425498 has 8 divisors (see below), whose sum is σ = 127938040320. Its totient is φ = 38381412060.

The previous prime is 81027425467. The next prime is 81027425539. The reversal of 81027425498 is 89452472018.

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

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, 1066150298 + ... + 1066150373.

It is an arithmetic number, because the mean of its divisors is an integer number (15992255040).

Almost surely, 2^81027425498 is an apocalyptic number.

81027425498 is a deficient number, since it is larger than the sum of its proper divisors (46910614822).

81027425498 is a wasteful number, since it uses less digits than its factorization.

81027425498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132300692.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 81027425498 in words is "eighty-one billion, twenty-seven million, four hundred twenty-five thousand, four hundred ninety-eight".