90345037340 has 48 divisors (see below), whose sum is σ = 194248720512. Its totient is φ = 35277243456.

The previous prime is 90345037327. The next prime is 90345037357. The reversal of 90345037340 is 4373054309.

It is a junction number, because it is equal to n+sod(n) for n = 90345037294 and 90345037303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507427 + ... + 1566213.

It is an arithmetic number, because the mean of its divisors is an integer number (4046848344).

Almost surely, 2^90345037340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90345037340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97124360256).

90345037340 is an abundant number, since it is smaller than the sum of its proper divisors (103903683172).

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

90345037340 is a wasteful number, since it uses less digits than its factorization.

90345037340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60626 (or 60624 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 38.

The spelling of 90345037340 in words is "ninety billion, three hundred forty-five million, thirty-seven thousand, three hundred forty".