145415342777 has 2 divisors, whose sum is σ = 145415342778. Its totient is φ = 145415342776.

The previous prime is 145415342759. The next prime is 145415342783. The reversal of 145415342777 is 777243514541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121028147881 + 24387194896 = 347891^2 + 156164^2 .

It is a cyclic number.

It is not a de Polignac number, because 145415342777 - 2⁸ = 145415342521 is a prime.

It is a super-2 number, since 2×145415342777² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145415342707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72707671388 + 72707671389.

It is an arithmetic number, because the mean of its divisors is an integer number (72707671389).

Almost surely, 2^145415342777 is an apocalyptic number.

It is an amenable number.

145415342777 is a deficient number, since it is larger than the sum of its proper divisors (1).

145415342777 is an equidigital number, since it uses as much as digits as its factorization.

145415342777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3292800, while the sum is 50.

The spelling of 145415342777 in words is "one hundred forty-five billion, four hundred fifteen million, three hundred forty-two thousand, seven hundred seventy-seven".