58453453721 has 4 divisors (see below), whose sum is σ = 62949873252. Its totient is φ = 53957034192.

The previous prime is 58453453717. The next prime is 58453453763. The reversal of 58453453721 is 12735435485.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12735435485 = 5 ⋅2547087097.

It can be written as a sum of positive squares in 2 ways, for example, as 24006093721 + 34447360000 = 154939^2 + 185600^2 .

It is a cyclic number.

It is not a de Polignac number, because 58453453721 - 2² = 58453453717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (58453452721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2248209746 + ... + 2248209771.

It is an arithmetic number, because the mean of its divisors is an integer number (15737468313).

Almost surely, 2^58453453721 is an apocalyptic number.

It is an amenable number.

58453453721 is a deficient number, since it is larger than the sum of its proper divisors (4496419531).

58453453721 is a wasteful number, since it uses less digits than its factorization.

58453453721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4496419530.

The product of its digits is 2016000, while the sum is 47.

The spelling of 58453453721 in words is "fifty-eight billion, four hundred fifty-three million, four hundred fifty-three thousand, seven hundred twenty-one".