80620891547 has 16 divisors (see below), whose sum is σ = 95340542400. Its totient is φ = 66703096320.

The previous prime is 80620891529. The next prime is 80620891553. The reversal of 80620891547 is 74519802608.

It is not a de Polignac number, because 80620891547 - 2²⁰ = 80619842971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80620891495 and 80620891504.

It is not an unprimeable number, because it can be changed into a prime (80620891517) 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, 747047 + ... + 848127.

It is an arithmetic number, because the mean of its divisors is an integer number (5958783900).

Almost surely, 2^80620891547 is an apocalyptic number.

80620891547 is a deficient number, since it is larger than the sum of its proper divisors (14719650853).

80620891547 is a wasteful number, since it uses less digits than its factorization.

80620891547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105046.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 80620891547 in words is "eighty billion, six hundred twenty million, eight hundred ninety-one thousand, five hundred forty-seven".