89190057487 has 2 divisors, whose sum is σ = 89190057488. Its totient is φ = 89190057486.

The previous prime is 89190057461. The next prime is 89190057533. The reversal of 89190057487 is 78475009198.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89190057487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89190057427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44595028743 + 44595028744.

It is an arithmetic number, because the mean of its divisors is an integer number (44595028744).

Almost surely, 2^89190057487 is an apocalyptic number.

89190057487 is a deficient number, since it is larger than the sum of its proper divisors (1).

89190057487 is an equidigital number, since it uses as much as digits as its factorization.

89190057487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5080320, while the sum is 58.

The spelling of 89190057487 in words is "eighty-nine billion, one hundred ninety million, fifty-seven thousand, four hundred eighty-seven".