145905235477541 has 2 divisors, whose sum is σ = 145905235477542. Its totient is φ = 145905235477540.

The previous prime is 145905235477537. The next prime is 145905235477607. The reversal of 145905235477541 is 145774532509541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145676354565316 + 228880912225 = 12069646^2 + 478415^2 .

It is a cyclic number.

It is not a de Polignac number, because 145905235477541 - 2² = 145905235477537 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145905235447541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72952617738770 + 72952617738771.

It is an arithmetic number, because the mean of its divisors is an integer number (72952617738771).

Almost surely, 2^{145905235477541} is an apocalyptic number.

It is an amenable number.

145905235477541 is a deficient number, since it is larger than the sum of its proper divisors (1).

145905235477541 is an equidigital number, since it uses as much as digits as its factorization.

145905235477541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840000, while the sum is 62.

The spelling of 145905235477541 in words is "one hundred forty-five trillion, nine hundred five billion, two hundred thirty-five million, four hundred seventy-seven thousand, five hundred forty-one".