82902493881 has 12 divisors (see below), whose sum is σ = 119762362980. Its totient is φ = 55261721760.

The previous prime is 82902493867. The next prime is 82902493931. The reversal of 82902493881 is 18839420928.

82902493881 is a `hidden beast` number, since 8 + 290 + 249 + 38 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15094333881 + 67808160000 = 122859^2 + 260400^2 .

It is not a de Polignac number, because 82902493881 - 2¹⁰ = 82902492857 is a prime.

It is a super-3 number, since 3×82902493881³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82902493781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470550 + ... + 622271.

It is an arithmetic number, because the mean of its divisors is an integer number (9980196915).

Almost surely, 2^82902493881 is an apocalyptic number.

It is an amenable number.

82902493881 is a deficient number, since it is larger than the sum of its proper divisors (36859869099).

82902493881 is a wasteful number, since it uses less digits than its factorization.

82902493881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101256 (or 1101253 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The spelling of 82902493881 in words is "eighty-two billion, nine hundred two million, four hundred ninety-three thousand, eight hundred eighty-one".