1577634516923 has 2 divisors, whose sum is σ = 1577634516924. Its totient is φ = 1577634516922.

The previous prime is 1577634516917. The next prime is 1577634517051. The reversal of 1577634516923 is 3296154367751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1577634516923 - 2⁶ = 1577634516859 is a prime.

It is not a weakly prime, because it can be changed into another prime (1577634516223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 788817258461 + 788817258462.

It is an arithmetic number, because the mean of its divisors is an integer number (788817258462).

Almost surely, 2^{1577634516923} is an apocalyptic number.

1577634516923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1577634516923 is an equidigital number, since it uses as much as digits as its factorization.

1577634516923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 59.

The spelling of 1577634516923 in words is "one trillion, five hundred seventy-seven billion, six hundred thirty-four million, five hundred sixteen thousand, nine hundred twenty-three".