516354541621 has 8 divisors (see below), whose sum is σ = 530498545920. Its totient is φ = 502342109808.

The previous prime is 516354541607. The next prime is 516354541657. The reversal of 516354541621 is 126145453615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 516354541621 - 2¹⁵ = 516354508853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516354541691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32885166 + ... + 32900863.

It is an arithmetic number, because the mean of its divisors is an integer number (66312318240).

Almost surely, 2^516354541621 is an apocalyptic number.

It is an amenable number.

516354541621 is a deficient number, since it is larger than the sum of its proper divisors (14144004299).

516354541621 is a wasteful number, since it uses less digits than its factorization.

516354541621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65786243.

The product of its digits is 432000, while the sum is 43.

The spelling of 516354541621 in words is "five hundred sixteen billion, three hundred fifty-four million, five hundred forty-one thousand, six hundred twenty-one".