420193006550 has 36 divisors (see below), whose sum is σ = 785387510628. Its totient is φ = 167254122000.

The previous prime is 420193006547. The next prime is 420193006567. The reversal of 420193006550 is 55600391024.

It is a self number, because there is not a number n which added to its sum of digits gives 420193006550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 66577895 + ... + 66584205.

Almost surely, 2^420193006550 is an apocalyptic number.

420193006550 is a deficient number, since it is larger than the sum of its proper divisors (365194504078).

420193006550 is an frugal number, since it uses more digits than its factorization.

420193006550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12845 (or 6529 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 420193006550 its reverse (55600391024), we get a palindrome (475793397574).

The spelling of 420193006550 in words is "four hundred twenty billion, one hundred ninety-three million, six thousand, five hundred fifty".