20413506216554 has 32 divisors (see below), whose sum is σ = 34996113856512. Its totient is φ = 8845525062000.

The previous prime is 20413506216463. The next prime is 20413506216599. The reversal of 20413506216554 is 45561260531402.

It is a super-2 number, since 2×20413506216554² (a number of 27 digits) contains 22 as substring.

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, 223326152 + ... + 223417539.

It is an arithmetic number, because the mean of its divisors is an integer number (1093628558016).

Almost surely, 2^{20413506216554} is an apocalyptic number.

20413506216554 is a deficient number, since it is larger than the sum of its proper divisors (14582607639958).

20413506216554 is a wasteful number, since it uses less digits than its factorization.

20413506216554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446743802.

The product of its (nonzero) digits is 864000, while the sum is 44.

Adding to 20413506216554 its reverse (45561260531402), we get a palindrome (65974766747956).

The spelling of 20413506216554 in words is "twenty trillion, four hundred thirteen billion, five hundred six million, two hundred sixteen thousand, five hundred fifty-four".