90545946401 has 4 divisors (see below), whose sum is σ = 90594291012. Its totient is φ = 90497601792.

The previous prime is 90545946373. The next prime is 90545946433. The reversal of 90545946401 is 10464954509.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10464954509 = 35801 ⋅292309.

It can be written as a sum of positive squares in 2 ways, for example, as 38789696401 + 51756250000 = 196951^2 + 227500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90545946401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90545948401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24169496 + ... + 24173241.

It is an arithmetic number, because the mean of its divisors is an integer number (22648572753).

Almost surely, 2^90545946401 is an apocalyptic number.

It is an amenable number.

90545946401 is a deficient number, since it is larger than the sum of its proper divisors (48344611).

90545946401 is a wasteful number, since it uses less digits than its factorization.

90545946401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48344610.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 90545946401 in words is "ninety billion, five hundred forty-five million, nine hundred forty-six thousand, four hundred one".