20570435437 has 8 divisors (see below), whose sum is σ = 20629683200. Its totient is φ = 20511272304.

The previous prime is 20570435429. The next prime is 20570435447. The reversal of 20570435437 is 73453407502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20570435437 - 2³ = 20570435429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20570435437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20570435447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482764 + ... + 523642.

It is an arithmetic number, because the mean of its divisors is an integer number (2578710400).

Almost surely, 2^20570435437 is an apocalyptic number.

It is an amenable number.

20570435437 is a deficient number, since it is larger than the sum of its proper divisors (59247763).

20570435437 is an equidigital number, since it uses as much as digits as its factorization.

20570435437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42315.

The product of its (nonzero) digits is 352800, while the sum is 40.

The spelling of 20570435437 in words is "twenty billion, five hundred seventy million, four hundred thirty-five thousand, four hundred thirty-seven".