538553640745 has 4 divisors (see below), whose sum is σ = 646264368900. Its totient is φ = 430842912592.

The previous prime is 538553640727. The next prime is 538553640763. The reversal of 538553640745 is 547046355835.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (538553640727) and next prime (538553640763).

It can be written as a sum of positive squares in 2 ways, for example, as 87324387049 + 451229253696 = 295507^2 + 671736^2 .

It is a cyclic number.

It is not a de Polignac number, because 538553640745 - 2¹⁷ = 538553509673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53855364070 + ... + 53855364079.

It is an arithmetic number, because the mean of its divisors is an integer number (161566092225).

Almost surely, 2^538553640745 is an apocalyptic number.

It is an amenable number.

538553640745 is a deficient number, since it is larger than the sum of its proper divisors (107710728155).

538553640745 is a wasteful number, since it uses less digits than its factorization.

538553640745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107710728154.

The product of its (nonzero) digits is 30240000, while the sum is 55.

The spelling of 538553640745 in words is "five hundred thirty-eight billion, five hundred fifty-three million, six hundred forty thousand, seven hundred forty-five".