20251151520216 has 64 divisors (see below), whose sum is σ = 51241805193600. Its totient is φ = 6668539534848.

The previous prime is 20251151520137. The next prime is 20251151520269. The reversal of 20251151520216 is 61202515115202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25883040 + ... + 26653968.

It is an arithmetic number, because the mean of its divisors is an integer number (800653206150).

Almost surely, 2^{20251151520216} is an apocalyptic number.

It is an amenable number.

20251151520216 is an abundant number, since it is smaller than the sum of its proper divisors (30990653673384).

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

20251151520216 is a wasteful number, since it uses less digits than its factorization.

20251151520216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784208 (or 784204 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 20251151520216 its reverse (61202515115202), we get a palindrome (81453666635418).

The spelling of 20251151520216 in words is "twenty trillion, two hundred fifty-one billion, one hundred fifty-one million, five hundred twenty thousand, two hundred sixteen".