6977138488 has 16 divisors (see below), whose sum is σ = 13083421680. Its totient is φ = 3488226048.

The previous prime is 6977138471. The next prime is 6977138489. The reversal of 6977138488 is 8848317796.

It is a super-2 number, since 2×6977138488² = 97360922961461852288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6977138489) 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, 57256 + ... + 131272.

It is an arithmetic number, because the mean of its divisors is an integer number (817713855).

Almost surely, 2^6977138488 is an apocalyptic number.

It is an amenable number.

6977138488 is a deficient number, since it is larger than the sum of its proper divisors (6106283192).

6977138488 is a wasteful number, since it uses less digits than its factorization.

6977138488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85806 (or 85802 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 61.

The square root of 6977138488 is about 83529.2672540589. The cubic root of 6977138488 is about 1910.8464115886.

The spelling of 6977138488 in words is "six billion, nine hundred seventy-seven million, one hundred thirty-eight thousand, four hundred eighty-eight".