90061518403723 has 4 divisors (see below), whose sum is σ = 90393848730208. Its totient is φ = 89729188077240.

The previous prime is 90061518403721. The next prime is 90061518403771. The reversal of 90061518403723 is 32730481516009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90061518403723 - 2¹ = 90061518403721 is a prime.

It is a super-2 number, since 2×90061518403723² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90061518403721) 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, 166165162836 + ... + 166165163377.

It is an arithmetic number, because the mean of its divisors is an integer number (22598462182552).

It is a 1-persistent number, because it is pandigital, but 2⋅90061518403723 = 180123036807446 is not.

Almost surely, 2^{90061518403723} is an apocalyptic number.

90061518403723 is a deficient number, since it is larger than the sum of its proper divisors (332330326485).

90061518403723 is a wasteful number, since it uses less digits than its factorization.

90061518403723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332330326484.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 90061518403723 in words is "ninety trillion, sixty-one billion, five hundred eighteen million, four hundred three thousand, seven hundred twenty-three".