42498691965 has 24 divisors (see below), whose sum is σ = 74423833848. Its totient is φ = 22432296960.

The previous prime is 42498691927. The next prime is 42498691981. The reversal of 42498691965 is 56919689424.

42498691965 is a `hidden beast` number, since 424 + 98 + 69 + 1 + 9 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1314860121 + 41183831844 = 36261^2 + 202938^2 .

It is not a de Polignac number, because 42498691965 - 2²⁴ = 42481914749 is a prime.

It is a super-2 number, since 2×42498691965² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

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, 4863756 + ... + 4872485.

It is an arithmetic number, because the mean of its divisors is an integer number (3100993077).

Almost surely, 2^42498691965 is an apocalyptic number.

42498691965 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42498691965 is a deficient number, since it is larger than the sum of its proper divisors (31925141883).

42498691965 is a wasteful number, since it uses less digits than its factorization.

42498691965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9736349 (or 9736346 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 42498691965 in words is "forty-two billion, four hundred ninety-eight million, six hundred ninety-one thousand, nine hundred sixty-five".