20251207602645 has 16 divisors (see below), whose sum is σ = 32455312627200. Its totient is φ = 10782850567104.

The previous prime is 20251207602611. The next prime is 20251207602671. The reversal of 20251207602645 is 54620670215202.

It is not a de Polignac number, because 20251207602645 - 2⁶ = 20251207602581 is a prime.

It is a super-2 number, since 2×20251207602645² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20251207602597 and 20251207602606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1112083570 + ... + 1112101779.

It is an arithmetic number, because the mean of its divisors is an integer number (2028457039200).

Almost surely, 2^{20251207602645} is an apocalyptic number.

It is an amenable number.

20251207602645 is a deficient number, since it is larger than the sum of its proper divisors (12204105024555).

20251207602645 is a wasteful number, since it uses less digits than its factorization.

20251207602645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224185964.

The product of its (nonzero) digits is 403200, while the sum is 42.

Adding to 20251207602645 its reverse (54620670215202), we get a palindrome (74871877817847).

The spelling of 20251207602645 in words is "twenty trillion, two hundred fifty-one billion, two hundred seven million, six hundred two thousand, six hundred forty-five".