2563500731020 has 12 divisors (see below), whose sum is σ = 5383351535184. Its totient is φ = 1025400292400.

The previous prime is 2563500731009. The next prime is 2563500731027. The reversal of 2563500731020 is 201370053652.

It is a super-3 number, since 3×2563500731020³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2563500731027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64087518256 + ... + 64087518295.

It is an arithmetic number, because the mean of its divisors is an integer number (448612627932).

Almost surely, 2^{2563500731020} is an apocalyptic number.

2563500731020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2563500731020 is an abundant number, since it is smaller than the sum of its proper divisors (2819850804164).

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

2563500731020 is a wasteful number, since it uses less digits than its factorization.

2563500731020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128175036560 (or 128175036558 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 34.

Adding to 2563500731020 its reverse (201370053652), we get a palindrome (2764870784672).

The spelling of 2563500731020 in words is "two trillion, five hundred sixty-three billion, five hundred million, seven hundred thirty-one thousand, twenty".