402432520655 has 32 divisors (see below), whose sum is σ = 558195997248. Its totient is φ = 275271321600.

The previous prime is 402432520649. The next prime is 402432520667. The reversal of 402432520655 is 556025234204.

It is not a de Polignac number, because 402432520655 - 2⁶ = 402432520591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1210445 + ... + 1506665.

It is an arithmetic number, because the mean of its divisors is an integer number (17443624914).

Almost surely, 2^402432520655 is an apocalyptic number.

402432520655 is a deficient number, since it is larger than the sum of its proper divisors (155763476593).

402432520655 is a wasteful number, since it uses less digits than its factorization.

402432520655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297707.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 402432520655 its reverse (556025234204), we get a palindrome (958457754859).

The spelling of 402432520655 in words is "four hundred two billion, four hundred thirty-two million, five hundred twenty thousand, six hundred fifty-five".