6938887632497 has 4 divisors (see below), whose sum is σ = 7126425136116. Its totient is φ = 6751350128880.

The previous prime is 6938887632493. The next prime is 6938887632499. The reversal of 6938887632497 is 7942367888396.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4323409476961 + 2615478155536 = 2079281^2 + 1617244^2 .

It is a cyclic number.

It is not a de Polignac number, because 6938887632497 - 2² = 6938887632493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6938887632493) 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, 93768751754 + ... + 93768751827.

It is an arithmetic number, because the mean of its divisors is an integer number (1781606284029).

Almost surely, 2^{6938887632497} is an apocalyptic number.

It is an amenable number.

6938887632497 is a deficient number, since it is larger than the sum of its proper divisors (187537503619).

6938887632497 is a wasteful number, since it uses less digits than its factorization.

6938887632497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187537503618.

The product of its digits is 5267275776, while the sum is 80.

The spelling of 6938887632497 in words is "six trillion, nine hundred thirty-eight billion, eight hundred eighty-seven million, six hundred thirty-two thousand, four hundred ninety-seven".