20079651553 has 8 divisors (see below), whose sum is σ = 21626880296. Its totient is φ = 18532800000.

The previous prime is 20079651523. The next prime is 20079651593. The reversal of 20079651553 is 35515697002.

It can be written as a sum of positive squares in 4 ways, for example, as 572501329 + 19507150224 = 23927^2 + 139668^2 .

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

It is not a de Polignac number, because 20079651553 - 2²⁹ = 19542780641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20079651523) 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, 21553 + ... + 201553.

It is an arithmetic number, because the mean of its divisors is an integer number (2703360037).

Almost surely, 2^20079651553 is an apocalyptic number.

It is an amenable number.

20079651553 is a deficient number, since it is larger than the sum of its proper divisors (1547228743).

20079651553 is a wasteful number, since it uses less digits than its factorization.

20079651553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188595.

The product of its (nonzero) digits is 283500, while the sum is 43.

The spelling of 20079651553 in words is "twenty billion, seventy-nine million, six hundred fifty-one thousand, five hundred fifty-three".