31639773118465 has 8 divisors (see below), whose sum is σ = 38775551736960. Its totient is φ = 24773269164912.

The previous prime is 31639773118463. The next prime is 31639773118501. The reversal of 31639773118465 is 56481137793613.

It is a happy number.

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

It is not a de Polignac number, because 31639773118465 - 2¹ = 31639773118463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31639773118397 and 31639773118406.

It is not an unprimeable number, because it can be changed into a prime (31639773118463) 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, 67318665975 + ... + 67318666444.

It is an arithmetic number, because the mean of its divisors is an integer number (4846943967120).

Almost surely, 2^{31639773118465} is an apocalyptic number.

It is an amenable number.

31639773118465 is a deficient number, since it is larger than the sum of its proper divisors (7135778618495).

31639773118465 is a wasteful number, since it uses less digits than its factorization.

31639773118465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134637332471.

The product of its digits is 68584320, while the sum is 64.

The spelling of 31639773118465 in words is "thirty-one trillion, six hundred thirty-nine billion, seven hundred seventy-three million, one hundred eighteen thousand, four hundred sixty-five".