62543221521 has 8 divisors (see below), whose sum is σ = 90971958624. Its totient is φ = 37904982720.

The previous prime is 62543221511. The next prime is 62543221547. The reversal of 62543221521 is 12512234526.

It is a happy number.

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

It is not a de Polignac number, because 62543221521 - 2¹⁰ = 62543220497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 1895249137 = 62543221521 / (6 + 2 + 5 + 4 + 3 + 2 + 2 + 1 + 5 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (62543221511) 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, 947624536 + ... + 947624601.

It is an arithmetic number, because the mean of its divisors is an integer number (11371494828).

Almost surely, 2^62543221521 is an apocalyptic number.

It is an amenable number.

62543221521 is a deficient number, since it is larger than the sum of its proper divisors (28428737103).

62543221521 is a wasteful number, since it uses less digits than its factorization.

62543221521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1895249151.

The product of its digits is 28800, while the sum is 33.

It can be divided in two parts, 625432 and 21521, that added together give a triangular number (646953 = T₁₁₃₇).

The spelling of 62543221521 in words is "sixty-two billion, five hundred forty-three million, two hundred twenty-one thousand, five hundred twenty-one".