90651234787 has 2 divisors, whose sum is σ = 90651234788. Its totient is φ = 90651234786.

The previous prime is 90651234721. The next prime is 90651234797. The reversal of 90651234787 is 78743215609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90651234787 - 2⁷ = 90651234659 is a prime.

It is not a weakly prime, because it can be changed into another prime (90651234797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45325617393 + 45325617394.

It is an arithmetic number, because the mean of its divisors is an integer number (45325617394).

It is a 2-persistent number, because it is pandigital, and so is 2⋅90651234787 = 181302469574, but 3⋅90651234787 = 271953704361 is not.

Almost surely, 2^90651234787 is an apocalyptic number.

90651234787 is a deficient number, since it is larger than the sum of its proper divisors (1).

90651234787 is an equidigital number, since it uses as much as digits as its factorization.

90651234787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 90651234787 in words is "ninety billion, six hundred fifty-one million, two hundred thirty-four thousand, seven hundred eighty-seven".