20375275734 has 80 divisors (see below), whose sum is σ = 50198962176. Its totient is φ = 6125641200.

The previous prime is 20375275691. The next prime is 20375275747. The reversal of 20375275734 is 43757257302.

It is a happy number.

20375275734 is a `hidden beast` number, since 2 + 0 + 3 + 75 + 2 + 7 + 573 + 4 = 666.

It is a super-2 number, since 2×20375275734² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20375275734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 181299 + ... + 271329.

Almost surely, 2^20375275734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20375275734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25099481088).

20375275734 is an abundant number, since it is smaller than the sum of its proper divisors (29823686442).

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

20375275734 is a wasteful number, since it uses less digits than its factorization.

20375275734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90183 (or 90174 counting only the distinct ones).

The product of its (nonzero) digits is 1234800, while the sum is 45.

The spelling of 20375275734 in words is "twenty billion, three hundred seventy-five million, two hundred seventy-five thousand, seven hundred thirty-four".