90407070851 has 2 divisors, whose sum is σ = 90407070852. Its totient is φ = 90407070850.

The previous prime is 90407070833. The next prime is 90407070931. The reversal of 90407070851 is 15807070409.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90407070851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90407070799 and 90407070808.

It is not a weakly prime, because it can be changed into another prime (90407070821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45203535425 + 45203535426.

It is an arithmetic number, because the mean of its divisors is an integer number (45203535426).

Almost surely, 2^90407070851 is an apocalyptic number.

90407070851 is a deficient number, since it is larger than the sum of its proper divisors (1).

90407070851 is an equidigital number, since it uses as much as digits as its factorization.

90407070851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 90407070851 in words is "ninety billion, four hundred seven million, seventy thousand, eight hundred fifty-one".