501325155542131 has 4 divisors (see below), whose sum is σ = 518612229871200. Its totient is φ = 484038081213064.

The previous prime is 501325155542093. The next prime is 501325155542153. The reversal of 501325155542131 is 131245551523105.

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

It is a cyclic number.

It is not a de Polignac number, because 501325155542131 - 2⁹ = 501325155541619 is a prime.

It is a super-2 number, since 2×501325155542131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (501325155512131) 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, 8643537164491 + ... + 8643537164548.

It is an arithmetic number, because the mean of its divisors is an integer number (129653057467800).

Almost surely, 2^{501325155542131} is an apocalyptic number.

501325155542131 is a deficient number, since it is larger than the sum of its proper divisors (17287074329069).

501325155542131 is a wasteful number, since it uses less digits than its factorization.

501325155542131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17287074329068.

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 501325155542131 in words is "five hundred one trillion, three hundred twenty-five billion, one hundred fifty-five million, five hundred forty-two thousand, one hundred thirty-one".