377145523477 has 2 divisors, whose sum is σ = 377145523478. Its totient is φ = 377145523476.

The previous prime is 377145523463. The next prime is 377145523483. The reversal of 377145523477 is 774325541773.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285454049841 + 91691473636 = 534279^2 + 302806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-377145523477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (377145523487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188572761738 + 188572761739.

It is an arithmetic number, because the mean of its divisors is an integer number (188572761739).

Almost surely, 2^377145523477 is an apocalyptic number.

It is an amenable number.

377145523477 is a deficient number, since it is larger than the sum of its proper divisors (1).

377145523477 is an equidigital number, since it uses as much as digits as its factorization.

377145523477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17287200, while the sum is 55.

The spelling of 377145523477 in words is "three hundred seventy-seven billion, one hundred forty-five million, five hundred twenty-three thousand, four hundred seventy-seven".