993855429522 has 18 divisors (see below), whose sum is σ = 2153362594773. Its totient is φ = 331283733312.

The previous prime is 993855429521. The next prime is 993855429533. The reversal of 993855429522 is 225924558399.

993855429522 is a `hidden beast` number, since 9 + 9 + 3 + 8 + 554 + 29 + 52 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 574911216441 + 418944213081 = 758229^2 + 647259^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=704931.

It is a super-2 number, since 2×993855429522² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 993855429522.

It is not an unprimeable number, because it can be changed into a prime (993855429521) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4112098 + ... + 4347074.

Almost surely, 2^993855429522 is an apocalyptic number.

993855429522 is an abundant number, since it is smaller than the sum of its proper divisors (1159507165251).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

993855429522 is an frugal number, since it uses more digits than its factorization.

993855429522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469962 (or 234982 counting only the distinct ones).

The product of its digits is 69984000, while the sum is 63.

The spelling of 993855429522 in words is "nine hundred ninety-three billion, eight hundred fifty-five million, four hundred twenty-nine thousand, five hundred twenty-two".