6897543774136 has 8 divisors (see below), whose sum is σ = 12932894576520. Its totient is φ = 3448771887064.

The previous prime is 6897543774101. The next prime is 6897543774137. The reversal of 6897543774136 is 6314773457986.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×6897543774136² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6897543774137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431096485876 + ... + 431096485891.

It is an arithmetic number, because the mean of its divisors is an integer number (1616611822065).

Almost surely, 2^{6897543774136} is an apocalyptic number.

It is an amenable number.

6897543774136 is a deficient number, since it is larger than the sum of its proper divisors (6035350802384).

6897543774136 is a wasteful number, since it uses less digits than its factorization.

6897543774136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862192971773 (or 862192971769 counting only the distinct ones).

The product of its digits is 640120320, while the sum is 70.

The spelling of 6897543774136 in words is "six trillion, eight hundred ninety-seven billion, five hundred forty-three million, seven hundred seventy-four thousand, one hundred thirty-six".