90769420287 has 48 divisors (see below), whose sum is σ = 167344486400. Its totient is φ = 47878363872.

The previous prime is 90769420279. The next prime is 90769420333. The reversal of 90769420287 is 78202496709.

It is not a de Polignac number, because 90769420287 - 2³ = 90769420279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90769420277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2030287 + ... + 2074512.

Almost surely, 2^90769420287 is an apocalyptic number.

90769420287 is a deficient number, since it is larger than the sum of its proper divisors (76575066113).

90769420287 is a wasteful number, since it uses less digits than its factorization.

90769420287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4104834 (or 4104822 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 90769420287 in words is "ninety billion, seven hundred sixty-nine million, four hundred twenty thousand, two hundred eighty-seven".