2355403943557 has 16 divisors (see below), whose sum is σ = 2708093067264. Its totient is φ = 2006800110000.

The previous prime is 2355403943527. The next prime is 2355403943569. The reversal of 2355403943557 is 7553493045532.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2355403943557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2355403943498 and 2355403943507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2355403943527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622819 + ... + 2258032.

It is an arithmetic number, because the mean of its divisors is an integer number (169255816704).

Almost surely, 2^{2355403943557} is an apocalyptic number.

It is an amenable number.

2355403943557 is a deficient number, since it is larger than the sum of its proper divisors (352689123707).

2355403943557 is a wasteful number, since it uses less digits than its factorization.

2355403943557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881560.

The product of its (nonzero) digits is 34020000, while the sum is 55.

The spelling of 2355403943557 in words is "two trillion, three hundred fifty-five billion, four hundred three million, nine hundred forty-three thousand, five hundred fifty-seven".