20354616523542 has 64 divisors (see below), whose sum is σ = 48213433382400. Its totient is φ = 5605232693760.

The previous prime is 20354616523537. The next prime is 20354616523547. The reversal of 20354616523542 is 24532561645302.

It is an interprime number because it is at equal distance from previous prime (20354616523537) and next prime (20354616523547).

It is a junction number, because it is equal to n+sod(n) for n = 20354616523491 and 20354616523500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20354616523547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13938067 + ... + 15329022.

It is an arithmetic number, because the mean of its divisors is an integer number (753334896600).

Almost surely, 2^{20354616523542} is an apocalyptic number.

20354616523542 is an abundant number, since it is smaller than the sum of its proper divisors (27858816858858).

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

20354616523542 is a wasteful number, since it uses less digits than its factorization.

20354616523542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29267701.

The product of its (nonzero) digits is 5184000, while the sum is 48.

The spelling of 20354616523542 in words is "twenty trillion, three hundred fifty-four billion, six hundred sixteen million, five hundred twenty-three thousand, five hundred forty-two".