1957128054653 has 4 divisors (see below), whose sum is σ = 1957133783388. Its totient is φ = 1957122325920.

The previous prime is 1957128054601. The next prime is 1957128054751. The reversal of 1957128054653 is 3564508217591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1841183037604 + 115945017049 = 1356902^2 + 340507^2 .

It is a cyclic number.

It is not a de Polignac number, because 1957128054653 - 2²⁴ = 1957111277437 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 (1957128054253) 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, 2317058 + ... + 3046803.

It is an arithmetic number, because the mean of its divisors is an integer number (489283445847).

It is a 1-persistent number, because it is pandigital, but 2⋅1957128054653 = 3914256109306 is not.

Almost surely, 2^{1957128054653} is an apocalyptic number.

It is an amenable number.

1957128054653 is a deficient number, since it is larger than the sum of its proper divisors (5728735).

1957128054653 is an equidigital number, since it uses as much as digits as its factorization.

1957128054653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728734.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 1957128054653 in words is "one trillion, nine hundred fifty-seven billion, one hundred twenty-eight million, fifty-four thousand, six hundred fifty-three".