63131874997 has 16 divisors (see below), whose sum is σ = 67785664000. Its totient is φ = 58620173040.

The previous prime is 63131874979. The next prime is 63131875057. The reversal of 63131874997 is 79947813136.

It is a cyclic number.

It is not a de Polignac number, because 63131874997 - 2¹⁵ = 63131842229 is a prime.

It is a super-3 number, since 3×63131874997³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63134874997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128722 + ... + 377932.

It is an arithmetic number, because the mean of its divisors is an integer number (4236604000).

Almost surely, 2^63131874997 is an apocalyptic number.

63131874997 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

63131874997 is a deficient number, since it is larger than the sum of its proper divisors (4653789003).

63131874997 is a wasteful number, since it uses less digits than its factorization.

63131874997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249496.

The product of its digits is 6858432, while the sum is 58.

The spelling of 63131874997 in words is "sixty-three billion, one hundred thirty-one million, eight hundred seventy-four thousand, nine hundred ninety-seven".