501345041421 has 32 divisors (see below), whose sum is σ = 815791104000. Its totient is φ = 267681435840.

The previous prime is 501345041419. The next prime is 501345041423. The reversal of 501345041421 is 124140543105.

It is an interprime number because it is at equal distance from previous prime (501345041419) and next prime (501345041423).

It is not a de Polignac number, because 501345041421 - 2¹ = 501345041419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501345041423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13258971 + ... + 13296728.

It is an arithmetic number, because the mean of its divisors is an integer number (25493472000).

Almost surely, 2^501345041421 is an apocalyptic number.

It is an amenable number.

501345041421 is a deficient number, since it is larger than the sum of its proper divisors (314446062579).

501345041421 is a wasteful number, since it uses less digits than its factorization.

501345041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26555769.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 501345041421 its reverse (124140543105), we get a palindrome (625485584526).

The spelling of 501345041421 in words is "five hundred one billion, three hundred forty-five million, forty-one thousand, four hundred twenty-one".