63807404242 has 4 divisors (see below), whose sum is σ = 95711106366. Its totient is φ = 31903702120.

The previous prime is 63807404231. The next prime is 63807404261. The reversal of 63807404242 is 24240470836.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40377285481 + 23430118761 = 200941^2 + 153069^2 .

It is a super-2 number, since 2×63807404242² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 63807404195 and 63807404204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15951851059 + ... + 15951851062.

Almost surely, 2^63807404242 is an apocalyptic number.

63807404242 is a deficient number, since it is larger than the sum of its proper divisors (31903702124).

63807404242 is a wasteful number, since it uses less digits than its factorization.

63807404242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31903702123.

The product of its (nonzero) digits is 258048, while the sum is 40.

The spelling of 63807404242 in words is "sixty-three billion, eight hundred seven million, four hundred four thousand, two hundred forty-two".