90943573446 has 160 divisors (see below), whose sum is σ = 225723041280. Its totient is φ = 27137073600.

The previous prime is 90943573421. The next prime is 90943573481. The reversal of 90943573446 is 64437534909.

It is a happy number.

90943573446 is a `hidden beast` number, since 90 + 9 + 43 + 5 + 73 + 446 = 666.

It is a super-2 number, since 2×90943573446² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 90943573392 and 90943573401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 77004976 + ... + 77006156.

It is an arithmetic number, because the mean of its divisors is an integer number (1410769008).

Almost surely, 2^90943573446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90943573446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112861520640).

90943573446 is an abundant number, since it is smaller than the sum of its proper divisors (134779467834).

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

90943573446 is a wasteful number, since it uses less digits than its factorization.

90943573446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 54.

The spelling of 90943573446 in words is "ninety billion, nine hundred forty-three million, five hundred seventy-three thousand, four hundred forty-six".