20272005761670 has 160 divisors (see below), whose sum is σ = 58743480039552. Its totient is φ = 4986521803008.

The previous prime is 20272005761653. The next prime is 20272005761671. The reversal of 20272005761670 is 7616750027202.

20272005761670 is a `hidden beast` number, since 2 + 0 + 2 + 7 + 2 + 0 + 0 + 576 + 1 + 6 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20272005761671) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14307744 + ... + 15660636.

Almost surely, 2^{20272005761670} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20272005761670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29371740019776).

20272005761670 is an abundant number, since it is smaller than the sum of its proper divisors (38471474277882).

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

20272005761670 is a wasteful number, since it uses less digits than its factorization.

20272005761670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354348 (or 1354339 counting only the distinct ones).

The product of its (nonzero) digits is 493920, while the sum is 45.

Adding to 20272005761670 its reverse (7616750027202), we get a palindrome (27888755788872).

The spelling of 20272005761670 in words is "twenty trillion, two hundred seventy-two billion, five million, seven hundred sixty-one thousand, six hundred seventy".