20645251500414 has 16 divisors (see below), whose sum is σ = 41420756957328. Its totient is φ = 6860041507392.

The previous prime is 20645251500413. The next prime is 20645251500473. The reversal of 20645251500414 is 41400515254602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20645251500413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5427246127 + ... + 5427249930.

It is an arithmetic number, because the mean of its divisors is an integer number (2588797309833).

Almost surely, 2^{20645251500414} is an apocalyptic number.

20645251500414 is an abundant number, since it is smaller than the sum of its proper divisors (20775505456914).

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

20645251500414 is a wasteful number, since it uses less digits than its factorization.

20645251500414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10854496379.

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 20645251500414 in words is "twenty trillion, six hundred forty-five billion, two hundred fifty-one million, five hundred thousand, four hundred fourteen".