80421212534 has 32 divisors (see below), whose sum is σ = 135797485824. Its totient is φ = 35441350560.

The previous prime is 80421212533. The next prime is 80421212561. The reversal of 80421212534 is 43521212408.

It is a self number, because there is not a number n which added to its sum of digits gives 80421212534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80421212533) 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, 223697 + ... + 459219.

It is an arithmetic number, because the mean of its divisors is an integer number (4243671432).

Almost surely, 2^80421212534 is an apocalyptic number.

80421212534 is a deficient number, since it is larger than the sum of its proper divisors (55376273290).

80421212534 is a wasteful number, since it uses less digits than its factorization.

80421212534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236132.

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 80421212534 in words is "eighty billion, four hundred twenty-one million, two hundred twelve thousand, five hundred thirty-four".