20526406242 has 64 divisors (see below), whose sum is σ = 42024407040. Its totient is φ = 6682604544.

The previous prime is 20526406183. The next prime is 20526406273. The reversal of 20526406242 is 24260462502.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19870158 + ... + 19871190.

It is an arithmetic number, because the mean of its divisors is an integer number (656631360).

Almost surely, 2^20526406242 is an apocalyptic number.

20526406242 is an abundant number, since it is smaller than the sum of its proper divisors (21498000798).

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

20526406242 is a wasteful number, since it uses less digits than its factorization.

20526406242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 20526406242 its reverse (24260462502), we get a palindrome (44786868744).

The spelling of 20526406242 in words is "twenty billion, five hundred twenty-six million, four hundred six thousand, two hundred forty-two".