80534820025557 has 24 divisors (see below), whose sum is σ = 116350004059224. Its totient is φ = 53679759243264.

The previous prime is 80534820025511. The next prime is 80534820025573. The reversal of 80534820025557 is 75552002843508.

It is a happy number.

80534820025557 is a `hidden beast` number, since 8 + 0 + 5 + 3 + 4 + 82 + 0 + 0 + 2 + 5 + 557 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2513743659441 + 78021076366116 = 1585479^2 + 8832954^2 .

It is not a de Polignac number, because 80534820025557 - 2⁴⁴ = 62942633981141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80534820035557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1200956973 + ... + 1201024029.

It is an arithmetic number, because the mean of its divisors is an integer number (4847916835801).

Almost surely, 2^{80534820025557} is an apocalyptic number.

It is an amenable number.

80534820025557 is a deficient number, since it is larger than the sum of its proper divisors (35815184033667).

80534820025557 is a wasteful number, since it uses less digits than its factorization.

80534820025557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90229 (or 90226 counting only the distinct ones).

The product of its (nonzero) digits is 13440000, while the sum is 54.

The spelling of 80534820025557 in words is "eighty trillion, five hundred thirty-four billion, eight hundred twenty million, twenty-five thousand, five hundred fifty-seven".