845535194990 has 16 divisors (see below), whose sum is σ = 1522368088560. Its totient is φ = 338124136320.

The previous prime is 845535194921. The next prime is 845535194993. The reversal of 845535194990 is 99491535548.

It is a super-2 number, since 2×845535194990² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845535194993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11203220 + ... + 11278439.

It is an arithmetic number, because the mean of its divisors is an integer number (95148005535).

Almost surely, 2^845535194990 is an apocalyptic number.

845535194990 is a deficient number, since it is larger than the sum of its proper divisors (676832893570).

845535194990 is a wasteful number, since it uses less digits than its factorization.

845535194990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22485427.

The product of its (nonzero) digits is 34992000, while the sum is 62.

The spelling of 845535194990 in words is "eight hundred forty-five billion, five hundred thirty-five million, one hundred ninety-four thousand, nine hundred ninety".