145197767951 has 2 divisors, whose sum is σ = 145197767952. Its totient is φ = 145197767950.

The previous prime is 145197767947. The next prime is 145197767999. The reversal of 145197767951 is 159767791541.

It is a weak prime.

It is an emirp because it is prime and its reverse (159767791541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145197767951 - 2² = 145197767947 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145197766951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72598883975 + 72598883976.

It is an arithmetic number, because the mean of its divisors is an integer number (72598883976).

Almost surely, 2^145197767951 is an apocalyptic number.

145197767951 is a deficient number, since it is larger than the sum of its proper divisors (1).

145197767951 is an equidigital number, since it uses as much as digits as its factorization.

145197767951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16669800, while the sum is 62.

The spelling of 145197767951 in words is "one hundred forty-five billion, one hundred ninety-seven million, seven hundred sixty-seven thousand, nine hundred fifty-one".