145566831587 has 2 divisors, whose sum is σ = 145566831588. Its totient is φ = 145566831586.

The previous prime is 145566831577. The next prime is 145566831601. The reversal of 145566831587 is 785138665541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145566831587 - 2¹⁴ = 145566815203 is a prime.

It is not a weakly prime, because it can be changed into another prime (145566831517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72783415793 + 72783415794.

It is an arithmetic number, because the mean of its divisors is an integer number (72783415794).

Almost surely, 2^145566831587 is an apocalyptic number.

145566831587 is a deficient number, since it is larger than the sum of its proper divisors (1).

145566831587 is an equidigital number, since it uses as much as digits as its factorization.

145566831587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192000, while the sum is 59.

The spelling of 145566831587 in words is "one hundred forty-five billion, five hundred sixty-six million, eight hundred thirty-one thousand, five hundred eighty-seven".