402520452455 has 16 divisors (see below), whose sum is σ = 526955717664. Its totient is φ = 292731118080.

The previous prime is 402520452421. The next prime is 402520452461. The reversal of 402520452455 is 554254025204.

It is not a de Polignac number, because 402520452455 - 2¹⁸ = 402520190311 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 15 ways as a sum of consecutive naturals, for example, 1513427 + ... + 1759403.

It is an arithmetic number, because the mean of its divisors is an integer number (32934732354).

Almost surely, 2^402520452455 is an apocalyptic number.

402520452455 is a deficient number, since it is larger than the sum of its proper divisors (124435265209).

402520452455 is a wasteful number, since it uses less digits than its factorization.

402520452455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275746.

The product of its (nonzero) digits is 320000, while the sum is 38.

Adding to 402520452455 its reverse (554254025204), we get a palindrome (956774477659).

The spelling of 402520452455 in words is "four hundred two billion, five hundred twenty million, four hundred fifty-two thousand, four hundred fifty-five".