63810723081 has 8 divisors (see below), whose sum is σ = 97235387584. Its totient is φ = 36463270320.

The previous prime is 63810723077. The next prime is 63810723103. The reversal of 63810723081 is 18032701836.

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

It is not a de Polignac number, because 63810723081 - 2² = 63810723077 is a prime.

It is a super-2 number, since 2×63810723081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63810723001) 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, 1519302910 + ... + 1519302951.

It is an arithmetic number, because the mean of its divisors is an integer number (12154423448).

Almost surely, 2^63810723081 is an apocalyptic number.

It is an amenable number.

63810723081 is a deficient number, since it is larger than the sum of its proper divisors (33424664503).

63810723081 is a wasteful number, since it uses less digits than its factorization.

63810723081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038605871.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 63810723081 in words is "sixty-three billion, eight hundred ten million, seven hundred twenty-three thousand, eighty-one".