21653063042140 has 12 divisors (see below), whose sum is σ = 45471432388536. Its totient is φ = 8661225216848.

The previous prime is 21653063042119. The next prime is 21653063042161. The reversal of 21653063042140 is 4124036035612.

It is an interprime number because it is at equal distance from previous prime (21653063042119) and next prime (21653063042161).

It is a self number, because there is not a number n which added to its sum of digits gives 21653063042140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541326576034 + ... + 541326576073.

It is an arithmetic number, because the mean of its divisors is an integer number (3789286032378).

Almost surely, 2^{21653063042140} is an apocalyptic number.

21653063042140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21653063042140 is an abundant number, since it is smaller than the sum of its proper divisors (23818369346396).

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

21653063042140 is a wasteful number, since it uses less digits than its factorization.

21653063042140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082653152116 (or 1082653152114 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 21653063042140 its reverse (4124036035612), we get a palindrome (25777099077752).

The spelling of 21653063042140 in words is "twenty-one trillion, six hundred fifty-three billion, sixty-three million, forty-two thousand, one hundred forty".