2635791889061 has 4 divisors (see below), whose sum is σ = 2656546156032. Its totient is φ = 2615037622092.

The previous prime is 2635791889057. The next prime is 2635791889103. The reversal of 2635791889061 is 1609881975362.

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 2635791889061 - 2² = 2635791889057 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 (2635791889961) 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, 10377133295 + ... + 10377133548.

It is an arithmetic number, because the mean of its divisors is an integer number (664136539008).

Almost surely, 2^{2635791889061} is an apocalyptic number.

It is an amenable number.

2635791889061 is a deficient number, since it is larger than the sum of its proper divisors (20754266971).

2635791889061 is a wasteful number, since it uses less digits than its factorization.

2635791889061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20754266970.

The product of its (nonzero) digits is 39191040, while the sum is 65.

The spelling of 2635791889061 in words is "two trillion, six hundred thirty-five billion, seven hundred ninety-one million, eight hundred eighty-nine thousand, sixty-one".