1577124378551 has 2 divisors, whose sum is σ = 1577124378552. Its totient is φ = 1577124378550.

The previous prime is 1577124378457. The next prime is 1577124378559. The reversal of 1577124378551 is 1558734217751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1577124378551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1577124378559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 788562189275 + 788562189276.

It is an arithmetic number, because the mean of its divisors is an integer number (788562189276).

Almost surely, 2^{1577124378551} is an apocalyptic number.

1577124378551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1577124378551 is an equidigital number, since it uses as much as digits as its factorization.

1577124378551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232000, while the sum is 56.

The spelling of 1577124378551 in words is "one trillion, five hundred seventy-seven billion, one hundred twenty-four million, three hundred seventy-eight thousand, five hundred fifty-one".