2641561946403 has 16 divisors (see below), whose sum is σ = 3617581560576. Its totient is φ = 1713299908320.

The previous prime is 2641561946393. The next prime is 2641561946411. The reversal of 2641561946403 is 3046491651462.

It is not a de Polignac number, because 2641561946403 - 2²¹ = 2641559849251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2641561946473) 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, 307500 + ... + 2318982.

It is an arithmetic number, because the mean of its divisors is an integer number (226098847536).

Almost surely, 2^{2641561946403} is an apocalyptic number.

2641561946403 is a deficient number, since it is larger than the sum of its proper divisors (976019614173).

2641561946403 is a wasteful number, since it uses less digits than its factorization.

2641561946403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023354.

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 2641561946403 in words is "two trillion, six hundred forty-one billion, five hundred sixty-one million, nine hundred forty-six thousand, four hundred three".