90285180551 has 2 divisors, whose sum is σ = 90285180552. Its totient is φ = 90285180550.

The previous prime is 90285180509. The next prime is 90285180563. The reversal of 90285180551 is 15508158209.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90285180551 - 2¹⁰ = 90285179527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90285180151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45142590275 + 45142590276.

It is an arithmetic number, because the mean of its divisors is an integer number (45142590276).

Almost surely, 2^90285180551 is an apocalyptic number.

90285180551 is a deficient number, since it is larger than the sum of its proper divisors (1).

90285180551 is an equidigital number, since it uses as much as digits as its factorization.

90285180551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 44.

The spelling of 90285180551 in words is "ninety billion, two hundred eighty-five million, one hundred eighty thousand, five hundred fifty-one".