90735068387 has 2 divisors, whose sum is σ = 90735068388. Its totient is φ = 90735068386.

The previous prime is 90735068381. The next prime is 90735068429. The reversal of 90735068387 is 78386053709.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90735068387 - 2⁶ = 90735068323 is a prime.

It is not a weakly prime, because it can be changed into another prime (90735068381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45367534193 + 45367534194.

It is an arithmetic number, because the mean of its divisors is an integer number (45367534194).

Almost surely, 2^90735068387 is an apocalyptic number.

90735068387 is a deficient number, since it is larger than the sum of its proper divisors (1).

90735068387 is an equidigital number, since it uses as much as digits as its factorization.

90735068387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 90735068387 in words is "ninety billion, seven hundred thirty-five million, sixty-eight thousand, three hundred eighty-seven".