20411561425031 has 16 divisors (see below), whose sum is σ = 23366352018240. Its totient is φ = 17466502168320.

The previous prime is 20411561424949. The next prime is 20411561425037. The reversal of 20411561425031 is 13052416511402.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20411561425031 is a prime.

It is a super-2 number, since 2×20411561425031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20411561424982 and 20411561425000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20411561425037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12868925 + ... + 14367753.

It is an arithmetic number, because the mean of its divisors is an integer number (1460397001140).

Almost surely, 2^{20411561425031} is an apocalyptic number.

20411561425031 is a deficient number, since it is larger than the sum of its proper divisors (2954790593209).

20411561425031 is a wasteful number, since it uses less digits than its factorization.

20411561425031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502074.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 20411561425031 its reverse (13052416511402), we get a palindrome (33463977936433).

The spelling of 20411561425031 in words is "twenty trillion, four hundred eleven billion, five hundred sixty-one million, four hundred twenty-five thousand, thirty-one".