63642257380437 has 8 divisors (see below), whose sum is σ = 84856679083680. Its totient is φ = 42428003632080.

The previous prime is 63642257380321. The next prime is 63642257380439. The reversal of 63642257380437 is 73408375224636.

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 63642257380437 - 2¹⁶ = 63642257314901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63642257380439) 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, 41101887 + ... + 42622172.

It is an arithmetic number, because the mean of its divisors is an integer number (10607084885460).

Almost surely, 2^{63642257380437} is an apocalyptic number.

It is an amenable number.

63642257380437 is a deficient number, since it is larger than the sum of its proper divisors (21214421703243).

63642257380437 is a wasteful number, since it uses less digits than its factorization.

63642257380437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83977443.

The product of its (nonzero) digits is 121927680, while the sum is 60.

The spelling of 63642257380437 in words is "sixty-three trillion, six hundred forty-two billion, two hundred fifty-seven million, three hundred eighty thousand, four hundred thirty-seven".