59019357721 has 9 divisors (see below), whose sum is σ = 59267953983. Its totient is φ = 58771802880.

The previous prime is 59019357703. The next prime is 59019357811. The reversal of 59019357721 is 12775391095.

The square root of 59019357721 is 242939.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 53273717721 + 5745640000 = 230811^2 + 75800^2 .

It is not a de Polignac number, because 59019357721 - 2¹⁷ = 59019226649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (59019357701) 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 8 ways as a sum of consecutive naturals, for example, 92073561 + ... + 92074201.

Almost surely, 2^59019357721 is an apocalyptic number.

59019357721 is the 242939-th square number.

59019357721 is the 121470-th centered octagonal number.

It is an amenable number.

59019357721 is a deficient number, since it is larger than the sum of its proper divisors (248596262).

59019357721 is an frugal number, since it uses more digits than its factorization.

59019357721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 595350, while the sum is 49.

Multiplying 59019357721 by its sum of digits (49), we get a square (2891948528329 = 1700573²).

The spelling of 59019357721 in words is "fifty-nine billion, nineteen million, three hundred fifty-seven thousand, seven hundred twenty-one".