90851742366247 has 16 divisors (see below), whose sum is σ = 96239476792800. Its totient is φ = 85468848870400.

The previous prime is 90851742366241. The next prime is 90851742366257. The reversal of 90851742366247 is 74266324715809.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90851742366247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90851742366241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521746497 + ... + 521920597.

It is an arithmetic number, because the mean of its divisors is an integer number (6014967299550).

It is a 1-persistent number, because it is pandigital, but 2⋅90851742366247 = 181703484732494 is not.

Almost surely, 2^{90851742366247} is an apocalyptic number.

90851742366247 is a deficient number, since it is larger than the sum of its proper divisors (5387734426553).

90851742366247 is a wasteful number, since it uses less digits than its factorization.

90851742366247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187826.

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 90851742366247 in words is "ninety trillion, eight hundred fifty-one billion, seven hundred forty-two million, three hundred sixty-six thousand, two hundred forty-seven".