145219756447 has 2 divisors, whose sum is σ = 145219756448. Its totient is φ = 145219756446.

The previous prime is 145219756369. The next prime is 145219756457. The reversal of 145219756447 is 744657912541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145219756447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145219756457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72609878223 + 72609878224.

It is an arithmetic number, because the mean of its divisors is an integer number (72609878224).

Almost surely, 2^145219756447 is an apocalyptic number.

145219756447 is a deficient number, since it is larger than the sum of its proper divisors (1).

145219756447 is an equidigital number, since it uses as much as digits as its factorization.

145219756447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8467200, while the sum is 55.

The spelling of 145219756447 in words is "one hundred forty-five billion, two hundred nineteen million, seven hundred fifty-six thousand, four hundred forty-seven".