Search a number
81027002639160 = 233251491510570519
BaseRepresentation
bin10010011011000110010001…
…101101011010001100111000
3101121220002212010111122101200
4102123012101231122030320
541110021300133423120
6444155142515214200
723032002442404024
oct2233062155321470
9347802763448350
1081027002639160
11238aa3a4690546
1291076ab2a7360
133629a76523946
141601a29329384
15957a71aa6e90
hex49b191b5a338

81027002639160 has 96 divisors (see below), whose sum is σ = 265105126260000. Its totient is φ = 21462185919744.

The previous prime is 81027002639159. The next prime is 81027002639171. The reversal of 81027002639160 is 6193620072018.

81027002639160 is a `hidden beast` number, since 8 + 1 + 0 + 2 + 7 + 0 + 0 + 2 + 639 + 1 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 755231620 + ... + 755338899.

It is an arithmetic number, because the mean of its divisors is an integer number (2761511731875).

Almost surely, 281027002639160 is an apocalyptic number.

It is an amenable number.

81027002639160 is an abundant number, since it is smaller than the sum of its proper divisors (184078123620840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81027002639160 is a wasteful number, since it uses less digits than its factorization.

81027002639160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510570685 (or 1510570678 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 81027002639160 in words is "eighty-one trillion, twenty-seven billion, two million, six hundred thirty-nine thousand, one hundred sixty".