977128351 has 2 divisors, whose sum is σ = 977128352. Its totient is φ = 977128350.

The previous prime is 977128309. The next prime is 977128381. The reversal of 977128351 is 153821779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 977128351 - 2⁷ = 977128223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 977128298 and 977128307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977128381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488564175 + 488564176.

It is an arithmetic number, because the mean of its divisors is an integer number (488564176).

Almost surely, 2^977128351 is an apocalyptic number.

977128351 is a deficient number, since it is larger than the sum of its proper divisors (1).

977128351 is an equidigital number, since it uses as much as digits as its factorization.

977128351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 43.

The square root of 977128351 is about 31259.0523048924. The cubic root of 977128351 is about 992.3172434088.

The spelling of 977128351 in words is "nine hundred seventy-seven million, one hundred twenty-eight thousand, three hundred fifty-one".