63342685842521 has 4 divisors (see below), whose sum is σ = 66676511413200. Its totient is φ = 60008860271844.

The previous prime is 63342685842479. The next prime is 63342685842529. The reversal of 63342685842521 is 12524858624336.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63342685842521 - 2²⁶ = 63342618733657 is a prime.

It is a super-2 number, since 2×63342685842521² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63342685842529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666912785311 + ... + 1666912785348.

It is an arithmetic number, because the mean of its divisors is an integer number (16669127853300).

Almost surely, 2^{63342685842521} is an apocalyptic number.

It is an amenable number.

63342685842521 is a deficient number, since it is larger than the sum of its proper divisors (3333825570679).

63342685842521 is a wasteful number, since it uses less digits than its factorization.

63342685842521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333825570678.

The product of its digits is 66355200, while the sum is 59.

The spelling of 63342685842521 in words is "sixty-three trillion, three hundred forty-two billion, six hundred eighty-five million, eight hundred forty-two thousand, five hundred twenty-one".