90802145108651 has 8 divisors (see below), whose sum is σ = 92083308093504. Its totient is φ = 89525438343880.

The previous prime is 90802145108641. The next prime is 90802145108657. The reversal of 90802145108651 is 15680154120809.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90802145108651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90802145108651.

It is not an unprimeable number, because it can be changed into a prime (90802145108657) 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, 1114013981 + ... + 1114095486.

It is an arithmetic number, because the mean of its divisors is an integer number (11510413511688).

Almost surely, 2^{90802145108651} is an apocalyptic number.

90802145108651 is a deficient number, since it is larger than the sum of its proper divisors (1281162984853).

90802145108651 is a wasteful number, since it uses less digits than its factorization.

90802145108651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2228110041.

The product of its (nonzero) digits is 691200, while the sum is 50.

The spelling of 90802145108651 in words is "ninety trillion, eight hundred two billion, one hundred forty-five million, one hundred eight thousand, six hundred fifty-one".