63542331457405 has 8 divisors (see below), whose sum is σ = 76583770666200. Its totient is φ = 50611883221056.

The previous prime is 63542331457393. The next prime is 63542331457411. The reversal of 63542331457405 is 50475413324536.

It can be written as a sum of positive squares in 4 ways, for example, as 19595123983044 + 43947207474361 = 4426638^2 + 6629269^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63542331457405 - 2¹⁹ = 63542330933117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27747741850 + ... + 27747744139.

It is an arithmetic number, because the mean of its divisors is an integer number (9572971333275).

Almost surely, 2^{63542331457405} is an apocalyptic number.

It is an amenable number.

63542331457405 is a deficient number, since it is larger than the sum of its proper divisors (13041439208795).

63542331457405 is a wasteful number, since it uses less digits than its factorization.

63542331457405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55495486223.

The product of its (nonzero) digits is 18144000, while the sum is 52.

The spelling of 63542331457405 in words is "sixty-three trillion, five hundred forty-two billion, three hundred thirty-one million, four hundred fifty-seven thousand, four hundred five".