90206791043 has 2 divisors, whose sum is σ = 90206791044. Its totient is φ = 90206791042.

The previous prime is 90206791027. The next prime is 90206791061. The reversal of 90206791043 is 34019760209.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90206791043 - 2⁴ = 90206791027 is a prime.

It is not a weakly prime, because it can be changed into another prime (90206791013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45103395521 + 45103395522.

It is an arithmetic number, because the mean of its divisors is an integer number (45103395522).

Almost surely, 2^90206791043 is an apocalyptic number.

90206791043 is a deficient number, since it is larger than the sum of its proper divisors (1).

90206791043 is an equidigital number, since it uses as much as digits as its factorization.

90206791043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The spelling of 90206791043 in words is "ninety billion, two hundred six million, seven hundred ninety-one thousand, forty-three".