20132550497 has 8 divisors (see below), whose sum is σ = 20668735752. Its totient is φ = 19598515200.

The previous prime is 20132550481. The next prime is 20132550511. The reversal of 20132550497 is 79405523102.

It can be written as a sum of positive squares in 4 ways, for example, as 2004890176 + 18127660321 = 44776^2 + 134639^2 .

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 20132550497 - 2⁴ = 20132550481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20132550497.

It is not an unprimeable number, because it can be changed into a prime (20132550457) 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, 518504 + ... + 555977.

It is an arithmetic number, because the mean of its divisors is an integer number (2583591969).

Almost surely, 2^20132550497 is an apocalyptic number.

It is an amenable number.

20132550497 is a deficient number, since it is larger than the sum of its proper divisors (536185255).

20132550497 is a wasteful number, since it uses less digits than its factorization.

20132550497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074979.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 20132550497 in words is "twenty billion, one hundred thirty-two million, five hundred fifty thousand, four hundred ninety-seven".