501034657381 has 4 divisors (see below), whose sum is σ = 501053875072. Its totient is φ = 501015439692.

The previous prime is 501034657339. The next prime is 501034657423. The reversal of 501034657381 is 183756430105.

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 an interprime number because it is at equal distance from previous prime (501034657339) and next prime (501034657423).

It is a cyclic number.

It is not a de Polignac number, because 501034657381 - 2¹⁷ = 501034526309 is a prime.

It is a super-2 number, since 2×501034657381² (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 (501034657681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9569685 + ... + 9621898.

It is an arithmetic number, because the mean of its divisors is an integer number (125263468768).

Almost surely, 2^501034657381 is an apocalyptic number.

It is an amenable number.

501034657381 is a deficient number, since it is larger than the sum of its proper divisors (19217691).

501034657381 is a wasteful number, since it uses less digits than its factorization.

501034657381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19217690.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 501034657381 in words is "five hundred one billion, thirty-four million, six hundred fifty-seven thousand, three hundred eighty-one".