402353018405 has 16 divisors (see below), whose sum is σ = 529774544880. Its totient is φ = 291516146688.

The previous prime is 402353018363. The next prime is 402353018429. The reversal of 402353018405 is 504810353204.

It can be written as a sum of positive squares in 8 ways, for example, as 2299298401 + 400053720004 = 47951^2 + 632498^2 .

It is not a de Polignac number, because 402353018405 - 2²⁶ = 402285909541 is a prime.

It is a super-2 number, since 2×402353018405² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58393220 + ... + 58400109.

It is an arithmetic number, because the mean of its divisors is an integer number (33110909055).

Almost surely, 2^402353018405 is an apocalyptic number.

It is an amenable number.

402353018405 is a deficient number, since it is larger than the sum of its proper divisors (127421526475).

402353018405 is a wasteful number, since it uses less digits than its factorization.

402353018405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116793400.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 402353018405 in words is "four hundred two billion, three hundred fifty-three million, eighteen thousand, four hundred five".