80477289493 has 4 divisors (see below), whose sum is σ = 81495989440. Its totient is φ = 79458589548.

The previous prime is 80477289491. The next prime is 80477289511. The reversal of 80477289493 is 39498277408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80477289493 - 2¹ = 80477289491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80477289491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509349855 + ... + 509350012.

It is an arithmetic number, because the mean of its divisors is an integer number (20373997360).

Almost surely, 2^80477289493 is an apocalyptic number.

It is an amenable number.

80477289493 is a deficient number, since it is larger than the sum of its proper divisors (1018699947).

80477289493 is a wasteful number, since it uses less digits than its factorization.

80477289493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018699946.

The product of its (nonzero) digits is 24385536, while the sum is 61.

The spelling of 80477289493 in words is "eighty billion, four hundred seventy-seven million, two hundred eighty-nine thousand, four hundred ninety-three".