2155641425641 has 4 divisors (see below), whose sum is σ = 2351608827984. Its totient is φ = 1959674023300.

The previous prime is 2155641425633. The next prime is 2155641425677. The reversal of 2155641425641 is 1465241465512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2155641425641 - 2³ = 2155641425633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2155641425591 and 2155641425600.

It is not an unprimeable number, because it can be changed into a prime (2155641425941) 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, 97983701155 + ... + 97983701176.

It is an arithmetic number, because the mean of its divisors is an integer number (587902206996).

Almost surely, 2^{2155641425641} is an apocalyptic number.

It is an amenable number.

2155641425641 is a deficient number, since it is larger than the sum of its proper divisors (195967402343).

2155641425641 is a wasteful number, since it uses less digits than its factorization.

2155641425641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195967402342.

The product of its digits is 1152000, while the sum is 46.

The spelling of 2155641425641 in words is "two trillion, one hundred fifty-five billion, six hundred forty-one million, four hundred twenty-five thousand, six hundred forty-one".