80137533261 has 4 divisors (see below), whose sum is σ = 106850044352. Its totient is φ = 53425022172.

The previous prime is 80137533247. The next prime is 80137533283. The reversal of 80137533261 is 16233573108.

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 not a de Polignac number, because 80137533261 - 2⁹ = 80137532749 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 (80137533361) 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, 13356255541 + ... + 13356255546.

It is an arithmetic number, because the mean of its divisors is an integer number (26712511088).

Almost surely, 2^80137533261 is an apocalyptic number.

It is an amenable number.

80137533261 is a deficient number, since it is larger than the sum of its proper divisors (26712511091).

80137533261 is a wasteful number, since it uses less digits than its factorization.

80137533261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26712511090.

The product of its (nonzero) digits is 90720, while the sum is 39.

The spelling of 80137533261 in words is "eighty billion, one hundred thirty-seven million, five hundred thirty-three thousand, two hundred sixty-one".