536720382181 has 4 divisors (see below), whose sum is σ = 536824181664. Its totient is φ = 536616582700.

The previous prime is 536720382169. The next prime is 536720382217. The reversal of 536720382181 is 181283027635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-536720382181 is a prime.

It is a super-2 number, since 2×536720382181² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536720382481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51891985 + ... + 51902326.

It is an arithmetic number, because the mean of its divisors is an integer number (134206045416).

Almost surely, 2^536720382181 is an apocalyptic number.

It is an amenable number.

536720382181 is a deficient number, since it is larger than the sum of its proper divisors (103799483).

536720382181 is a wasteful number, since it uses less digits than its factorization.

536720382181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103799482.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 536720382181 in words is "five hundred thirty-six billion, seven hundred twenty million, three hundred eighty-two thousand, one hundred eighty-one".