400779102851 has 2 divisors, whose sum is σ = 400779102852. Its totient is φ = 400779102850.

The previous prime is 400779102839. The next prime is 400779102917. The reversal of 400779102851 is 158201977004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400779102851 is a prime.

It is not a weakly prime, because it can be changed into another prime (400779102821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200389551425 + 200389551426.

It is an arithmetic number, because the mean of its divisors is an integer number (200389551426).

Almost surely, 2^400779102851 is an apocalyptic number.

400779102851 is a deficient number, since it is larger than the sum of its proper divisors (1).

400779102851 is an equidigital number, since it uses as much as digits as its factorization.

400779102851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 400779102851 in words is "four hundred billion, seven hundred seventy-nine million, one hundred two thousand, eight hundred fifty-one".