6211278747 has 8 divisors (see below), whose sum is σ = 9201894480. Its totient is φ = 4140852480.

The previous prime is 6211278743. The next prime is 6211278757. The reversal of 6211278747 is 7478721126.

6211278747 is a `hidden beast` number, since 621 + 12 + 7 + 8 + 7 + 4 + 7 = 666.

It is not a de Polignac number, because 6211278747 - 2² = 6211278743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6211278743) 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, 115023654 + ... + 115023707.

It is an arithmetic number, because the mean of its divisors is an integer number (1150236810).

Almost surely, 2^6211278747 is an apocalyptic number.

6211278747 is a deficient number, since it is larger than the sum of its proper divisors (2990615733).

6211278747 is a wasteful number, since it uses less digits than its factorization.

6211278747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230047370 (or 230047364 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The square root of 6211278747 is about 78811.6663127991. Note that the first 3 decimals coincide. The cubic root of 6211278747 is about 1838.2038579649.

The spelling of 6211278747 in words is "six billion, two hundred eleven million, two hundred seventy-eight thousand, seven hundred forty-seven".