20435013545 has 8 divisors (see below), whose sum is σ = 24751194624. Its totient is φ = 16195225264.

The previous prime is 20435013509. The next prime is 20435013587. The reversal of 20435013545 is 54531053402.

It is a happy number.

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 20435013545 - 2²⁴ = 20418236329 is a prime.

It is a Duffinian 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, 19097609 + ... + 19098678.

It is an arithmetic number, because the mean of its divisors is an integer number (3093899328).

Almost surely, 2^20435013545 is an apocalyptic number.

It is an amenable number.

20435013545 is a deficient number, since it is larger than the sum of its proper divisors (4316181079).

20435013545 is a wasteful number, since it uses less digits than its factorization.

20435013545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38196399.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 20435013545 its reverse (54531053402), we get a palindrome (74966066947).

The spelling of 20435013545 in words is "twenty billion, four hundred thirty-five million, thirteen thousand, five hundred forty-five".