20252706760661 has 16 divisors (see below), whose sum is σ = 20566044611904. Its totient is φ = 19939697420544.

The previous prime is 20252706760547. The next prime is 20252706760717. The reversal of 20252706760661 is 16606760725202.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20252706760661 is a prime.

It is a super-2 number, since 2×20252706760661² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252706760961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317070205 + ... + 1317085581.

It is an arithmetic number, because the mean of its divisors is an integer number (1285377788244).

Almost surely, 2^{20252706760661} is an apocalyptic number.

It is an amenable number.

20252706760661 is a deficient number, since it is larger than the sum of its proper divisors (313337851243).

20252706760661 is a wasteful number, since it uses less digits than its factorization.

20252706760661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24740.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 20252706760661 in words is "twenty trillion, two hundred fifty-two billion, seven hundred six million, seven hundred sixty thousand, six hundred sixty-one".