63804556782131 has 32 divisors (see below), whose sum is σ = 73614934149120. Its totient is φ = 54766248825600.

The previous prime is 63804556782103. The next prime is 63804556782137. The reversal of 63804556782131 is 13128765540836.

It is a cyclic number.

It is not a de Polignac number, because 63804556782131 - 2¹⁸ = 63804556519987 is a prime.

It is a super-2 number, since 2×63804556782131² (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 (63804556782137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6626330 + ... + 13096463.

It is an arithmetic number, because the mean of its divisors is an integer number (2300466692160).

Almost surely, 2^{63804556782131} is an apocalyptic number.

63804556782131 is a deficient number, since it is larger than the sum of its proper divisors (9810377366989).

63804556782131 is a wasteful number, since it uses less digits than its factorization.

63804556782131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19723067.

The product of its (nonzero) digits is 29030400, while the sum is 59.

The spelling of 63804556782131 in words is "sixty-three trillion, eight hundred four billion, five hundred fifty-six million, seven hundred eighty-two thousand, one hundred thirty-one".