6939695721274 has 4 divisors (see below), whose sum is σ = 10409543581914. Its totient is φ = 3469847860636.

The previous prime is 6939695721263. The next prime is 6939695721391. The reversal of 6939695721274 is 4721275969396.

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

It can be written as a sum of positive squares in only one way, i.e., 6812491505625 + 127204215649 = 2610075^2 + 356657^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1734923930317 + ... + 1734923930320.

Almost surely, 2^{6939695721274} is an apocalyptic number.

6939695721274 is a deficient number, since it is larger than the sum of its proper divisors (3469847860640).

6939695721274 is a wasteful number, since it uses less digits than its factorization.

6939695721274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469847860639.

The product of its digits is 308629440, while the sum is 70.

The spelling of 6939695721274 in words is "six trillion, nine hundred thirty-nine billion, six hundred ninety-five million, seven hundred twenty-one thousand, two hundred seventy-four".