145536209947 has 2 divisors, whose sum is σ = 145536209948. Its totient is φ = 145536209946.

The previous prime is 145536209941. The next prime is 145536209999. The reversal of 145536209947 is 749902635541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145536209947 - 2¹⁵ = 145536177179 is a prime.

It is not a weakly prime, because it can be changed into another prime (145536209941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72768104973 + 72768104974.

It is an arithmetic number, because the mean of its divisors is an integer number (72768104974).

Almost surely, 2^145536209947 is an apocalyptic number.

145536209947 is a deficient number, since it is larger than the sum of its proper divisors (1).

145536209947 is an equidigital number, since it uses as much as digits as its factorization.

145536209947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 145536209947 in words is "one hundred forty-five billion, five hundred thirty-six million, two hundred nine thousand, nine hundred forty-seven".