402561302422550 has 24 divisors (see below), whose sum is σ = 759021063917016. Its totient is φ = 158818705611840.

The previous prime is 402561302422549. The next prime is 402561302422561. The reversal of 402561302422550 is 55224203165204.

It is a junction number, because it is equal to n+sod(n) for n = 402561302422498 and 402561302422507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55145380244 + ... + 55145387543.

It is an arithmetic number, because the mean of its divisors is an integer number (31625877663209).

Almost surely, 2^{402561302422550} is an apocalyptic number.

402561302422550 is a deficient number, since it is larger than the sum of its proper divisors (356459761494466).

402561302422550 is a wasteful number, since it uses less digits than its factorization.

402561302422550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110290767872 (or 110290767867 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 402561302422550 its reverse (55224203165204), we get a palindrome (457785505587754).

The spelling of 402561302422550 in words is "four hundred two trillion, five hundred sixty-one billion, three hundred two million, four hundred twenty-two thousand, five hundred fifty".