2236738908621 has 24 divisors (see below), whose sum is σ = 3526100294304. Its totient is φ = 1257183456480.

The previous prime is 2236738908619. The next prime is 2236738908623. The reversal of 2236738908621 is 1268098376322.

It is an interprime number because it is at equal distance from previous prime (2236738908619) and next prime (2236738908623).

It is not a de Polignac number, because 2236738908621 - 2¹ = 2236738908619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2236738908623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124711615 + ... + 124729548.

It is an arithmetic number, because the mean of its divisors is an integer number (146920845596).

Almost surely, 2^{2236738908621} is an apocalyptic number.

2236738908621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2236738908621 is a deficient number, since it is larger than the sum of its proper divisors (1289361385683).

2236738908621 is a wasteful number, since it uses less digits than its factorization.

2236738908621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249441241 (or 249441234 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 2236738908621 in words is "two trillion, two hundred thirty-six billion, seven hundred thirty-eight million, nine hundred eight thousand, six hundred twenty-one".