2605335861000 has 64 divisors (see below), whose sum is σ = 8128647895680. Its totient is φ = 694756228800.

The previous prime is 2605335860993. The next prime is 2605335861001. The reversal of 2605335861000 is 1685335062.

It is a super-2 number, since 2×2605335861000² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2605335861000.

It is not an unprimeable number, because it can be changed into a prime (2605335861001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434219644 + ... + 434225643.

It is an arithmetic number, because the mean of its divisors is an integer number (127010123370).

Almost surely, 2^{2605335861000} is an apocalyptic number.

2605335861000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2605335861000 is an abundant number, since it is smaller than the sum of its proper divisors (5523312034680).

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

2605335861000 is a wasteful number, since it uses less digits than its factorization.

2605335861000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868445311 (or 868445297 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 2605335861000 in words is "two trillion, six hundred five billion, three hundred thirty-five million, eight hundred sixty-one thousand".