63801340571 has 4 divisors (see below), whose sum is σ = 64036770144. Its totient is φ = 63565911000.

The previous prime is 63801340553. The next prime is 63801340649. The reversal of 63801340571 is 17504310836.

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

It is a cyclic number.

It is not a de Polignac number, because 63801340571 - 2²² = 63797146267 is a prime.

It is a super-2 number, since 2×63801340571² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63801340511) 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, 117714380 + ... + 117714921.

It is an arithmetic number, because the mean of its divisors is an integer number (16009192536).

Almost surely, 2^63801340571 is an apocalyptic number.

63801340571 is a deficient number, since it is larger than the sum of its proper divisors (235429573).

63801340571 is a wasteful number, since it uses less digits than its factorization.

63801340571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235429572.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 63801340571 in words is "sixty-three billion, eight hundred one million, three hundred forty thousand, five hundred seventy-one".