6961655851 has 2 divisors, whose sum is σ = 6961655852. Its totient is φ = 6961655850.

The previous prime is 6961655843. The next prime is 6961655881. The reversal of 6961655851 is 1585561696.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6961655851 - 2³ = 6961655843 is a prime.

It is not a weakly prime, because it can be changed into another prime (6961655821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3480827925 + 3480827926.

It is an arithmetic number, because the mean of its divisors is an integer number (3480827926).

Almost surely, 2^6961655851 is an apocalyptic number.

6961655851 is a deficient number, since it is larger than the sum of its proper divisors (1).

6961655851 is an equidigital number, since it uses as much as digits as its factorization.

6961655851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944000, while the sum is 52.

The square root of 6961655851 is about 83436.5378656138. The cubic root of 6961655851 is about 1909.4319419396.

The spelling of 6961655851 in words is "six billion, nine hundred sixty-one million, six hundred fifty-five thousand, eight hundred fifty-one".