157241566477 has 4 divisors (see below), whose sum is σ = 160208388540. Its totient is φ = 154274744416.

The previous prime is 157241566463. The next prime is 157241566483. The reversal of 157241566477 is 774665142751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774665142751 = 3203 ⋅241856117.

It can be written as a sum of positive squares in 2 ways, for example, as 109411439076 + 47830127401 = 330774^2 + 218701^2 .

It is a cyclic number.

It is not a de Polignac number, because 157241566477 - 2²³ = 157233177869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157241566457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483410952 + ... + 1483411057.

It is an arithmetic number, because the mean of its divisors is an integer number (40052097135).

Almost surely, 2^157241566477 is an apocalyptic number.

It is an amenable number.

157241566477 is a deficient number, since it is larger than the sum of its proper divisors (2966822063).

157241566477 is an equidigital number, since it uses as much as digits as its factorization.

157241566477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966822062.

The product of its digits is 9878400, while the sum is 55.

The spelling of 157241566477 in words is "one hundred fifty-seven billion, two hundred forty-one million, five hundred sixty-six thousand, four hundred seventy-seven".