20475245637534 has 16 divisors (see below), whose sum is σ = 40960721273472. Its totient is φ = 6823376879448.

The previous prime is 20475245637463. The next prime is 20475245637559. The reversal of 20475245637534 is 43573654257402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426223914 + ... + 426271949.

It is an arithmetic number, because the mean of its divisors is an integer number (2560045079592).

Almost surely, 2^{20475245637534} is an apocalyptic number.

20475245637534 is an abundant number, since it is smaller than the sum of its proper divisors (20485475635938).

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

20475245637534 is a wasteful number, since it uses less digits than its factorization.

20475245637534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852499871.

The product of its (nonzero) digits is 84672000, while the sum is 57.

The spelling of 20475245637534 in words is "twenty trillion, four hundred seventy-five billion, two hundred forty-five million, six hundred thirty-seven thousand, five hundred thirty-four".