7906143977 has 2 divisors, whose sum is σ = 7906143978. Its totient is φ = 7906143976.

The previous prime is 7906143961. The next prime is 7906144003. The reversal of 7906143977 is 7793416097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7752978601 + 153165376 = 88051^2 + 12376^2 .

It is a cyclic number.

It is not a de Polignac number, because 7906143977 - 2⁴ = 7906143961 is a prime.

It is a super-2 number, since 2×7906143977² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7906143907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3953071988 + 3953071989.

It is an arithmetic number, because the mean of its divisors is an integer number (3953071989).

Almost surely, 2^7906143977 is an apocalyptic number.

It is an amenable number.

7906143977 is a deficient number, since it is larger than the sum of its proper divisors (1).

7906143977 is an equidigital number, since it uses as much as digits as its factorization.

7906143977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000376, while the sum is 53.

The square root of 7906143977 is about 88916.5000267105. The cubic root of 7906143977 is about 1992.1478771777.

The spelling of 7906143977 in words is "seven billion, nine hundred six million, one hundred forty-three thousand, nine hundred seventy-seven".