541721397519 has 12 divisors (see below), whose sum is σ = 823669961400. Its totient is φ = 342139829904.

The previous prime is 541721397509. The next prime is 541721397523. The reversal of 541721397519 is 915793127145.

541721397519 is a `hidden beast` number, since 5 + 4 + 17 + 21 + 3 + 97 + 519 = 666.

It is not a de Polignac number, because 541721397519 - 2⁷ = 541721397391 is a prime.

It is a super-2 number, since 2×541721397519² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541721397509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1583980524 + ... + 1583980865.

It is an arithmetic number, because the mean of its divisors is an integer number (68639163450).

Almost surely, 2^541721397519 is an apocalyptic number.

541721397519 is a deficient number, since it is larger than the sum of its proper divisors (281948563881).

541721397519 is a wasteful number, since it uses less digits than its factorization.

541721397519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3167961414 (or 3167961411 counting only the distinct ones).

The product of its digits is 2381400, while the sum is 54.

The spelling of 541721397519 in words is "five hundred forty-one billion, seven hundred twenty-one million, three hundred ninety-seven thousand, five hundred nineteen".