402155217379 has 2 divisors, whose sum is σ = 402155217380. Its totient is φ = 402155217378.

The previous prime is 402155217371. The next prime is 402155217383. The reversal of 402155217379 is 973712551204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402155217379 - 2³ = 402155217371 is a prime.

It is not a weakly prime, because it can be changed into another prime (402155217371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201077608689 + 201077608690.

It is an arithmetic number, because the mean of its divisors is an integer number (201077608690).

Almost surely, 2^402155217379 is an apocalyptic number.

402155217379 is a deficient number, since it is larger than the sum of its proper divisors (1).

402155217379 is an equidigital number, since it uses as much as digits as its factorization.

402155217379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 402155217379 in words is "four hundred two billion, one hundred fifty-five million, two hundred seventeen thousand, three hundred seventy-nine".