20159780023 has 8 divisors (see below), whose sum is σ = 20398025088. Its totient is φ = 19922855424.

The previous prime is 20159779993. The next prime is 20159780101. The reversal of 20159780023 is 32008795102.

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 20159780023 - 2¹³ = 20159771831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20159780423) 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, 299386 + ... + 360487.

It is an arithmetic number, because the mean of its divisors is an integer number (2549753136).

Almost surely, 2^20159780023 is an apocalyptic number.

20159780023 is a deficient number, since it is larger than the sum of its proper divisors (238245065).

20159780023 is a wasteful number, since it uses less digits than its factorization.

20159780023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660233.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 20159780023 in words is "twenty billion, one hundred fifty-nine million, seven hundred eighty thousand, twenty-three".