20602904915250 has 1152 divisors, whose sum is σ = 69860525829120. Its totient is φ = 4352624640000.

The previous prime is 20602904915231. The next prime is 20602904915293. The reversal of 20602904915250 is 5251940920602.

20602904915250 is a `hidden beast` number, since 2 + 0 + 60 + 2 + 9 + 0 + 491 + 52 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 20602904915196 and 20602904915205.

It is an unprimeable number.

It is a polite number, since it can be written in 575 ways as a sum of consecutive naturals, for example, 51378815050 + ... + 51378815450.

It is an arithmetic number, because the mean of its divisors is an integer number (60642817560).

Almost surely, 2^{20602904915250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20602904915250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34930262914560).

20602904915250 is an abundant number, since it is smaller than the sum of its proper divisors (49257620913870).

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

20602904915250 is a wasteful number, since it uses less digits than its factorization.

20602904915250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 20602904915250 in words is "twenty trillion, six hundred two billion, nine hundred four million, nine hundred fifteen thousand, two hundred fifty".