90742858287 has 16 divisors (see below), whose sum is σ = 125005350912. Its totient is φ = 58491300960.

The previous prime is 90742858189. The next prime is 90742858307. The reversal of 90742858287 is 78285824709.

It is a de Polignac number, because none of the positive numbers 2^k-90742858287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90742858287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90742854287) 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, 332883 + ... + 540644.

It is an arithmetic number, because the mean of its divisors is an integer number (7812834432).

Almost surely, 2^90742858287 is an apocalyptic number.

90742858287 is a deficient number, since it is larger than the sum of its proper divisors (34262492625).

90742858287 is a wasteful number, since it uses less digits than its factorization.

90742858287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874678.

The product of its (nonzero) digits is 18063360, while the sum is 60.

The spelling of 90742858287 in words is "ninety billion, seven hundred forty-two million, eight hundred fifty-eight thousand, two hundred eighty-seven".