521741474072031 has 4 divisors (see below), whose sum is σ = 695655298762712. Its totient is φ = 347827649381352.

The previous prime is 521741474072023. The next prime is 521741474072033. The reversal of 521741474072031 is 130270474147125.

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

It is not a de Polignac number, because 521741474072031 - 2³ = 521741474072023 is a prime.

It is a super-2 number, since 2×521741474072031² (a number of 30 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 (521741474072033) 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, 86956912345336 + ... + 86956912345341.

It is an arithmetic number, because the mean of its divisors is an integer number (173913824690678).

Almost surely, 2^{521741474072031} is an apocalyptic number.

521741474072031 is a deficient number, since it is larger than the sum of its proper divisors (173913824690681).

521741474072031 is a wasteful number, since it uses less digits than its factorization.

521741474072031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173913824690680.

The product of its (nonzero) digits is 1317120, while the sum is 48.

The spelling of 521741474072031 in words is "five hundred twenty-one trillion, seven hundred forty-one billion, four hundred seventy-four million, seventy-two thousand, thirty-one".