20354130623526 has 64 divisors (see below), whose sum is σ = 47281334639616. Its totient is φ = 5721120316800.

The previous prime is 20354130623521. The next prime is 20354130623551. The reversal of 20354130623526 is 62532603145302.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354130623521) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 6028405 + ... + 8777808.

It is an arithmetic number, because the mean of its divisors is an integer number (738770853744).

Almost surely, 2^{20354130623526} is an apocalyptic number.

20354130623526 is an abundant number, since it is smaller than the sum of its proper divisors (26927204016090).

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

20354130623526 is a wasteful number, since it uses less digits than its factorization.

20354130623526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14806757.

The product of its (nonzero) digits is 777600, while the sum is 42.

Adding to 20354130623526 its reverse (62532603145302), we get a palindrome (82886733768828).

The spelling of 20354130623526 in words is "twenty trillion, three hundred fifty-four billion, one hundred thirty million, six hundred twenty-three thousand, five hundred twenty-six".