145534571477 has 2 divisors, whose sum is σ = 145534571478. Its totient is φ = 145534571476.

The previous prime is 145534571447. The next prime is 145534571519. The reversal of 145534571477 is 774175435541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144125770321 + 1408801156 = 379639^2 + 37534^2 .

It is a cyclic number.

It is not a de Polignac number, because 145534571477 - 2¹⁴ = 145534555093 is a prime.

It is a super-2 number, since 2×145534571477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145534571447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72767285738 + 72767285739.

It is an arithmetic number, because the mean of its divisors is an integer number (72767285739).

Almost surely, 2^145534571477 is an apocalyptic number.

It is an amenable number.

145534571477 is a deficient number, since it is larger than the sum of its proper divisors (1).

145534571477 is an equidigital number, since it uses as much as digits as its factorization.

145534571477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232000, while the sum is 53.

The spelling of 145534571477 in words is "one hundred forty-five billion, five hundred thirty-four million, five hundred seventy-one thousand, four hundred seventy-seven".