1232154509977 has 2 divisors, whose sum is σ = 1232154509978. Its totient is φ = 1232154509976.

The previous prime is 1232154509951. The next prime is 1232154510017. The reversal of 1232154509977 is 7799054512321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1221354312201 + 10800197776 = 1105149^2 + 103924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232154509977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1232154519977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616077254988 + 616077254989.

It is an arithmetic number, because the mean of its divisors is an integer number (616077254989).

Almost surely, 2^{1232154509977} is an apocalyptic number.

It is an amenable number.

1232154509977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232154509977 is an equidigital number, since it uses as much as digits as its factorization.

1232154509977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 1232154509977 in words is "one trillion, two hundred thirty-two billion, one hundred fifty-four million, five hundred nine thousand, nine hundred seventy-seven".