2621234773 has 4 divisors (see below), whose sum is σ = 2654415040. Its totient is φ = 2588054508.

The previous prime is 2621234731. The next prime is 2621234779. The reversal of 2621234773 is 3774321262.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3774321262 = 2 ⋅1887160631.

It is a cyclic number.

It is not a de Polignac number, because 2621234773 - 2¹⁷ = 2621103701 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 (2621234779) 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, 16590015 + ... + 16590172.

It is an arithmetic number, because the mean of its divisors is an integer number (663603760).

Almost surely, 2^2621234773 is an apocalyptic number.

It is an amenable number.

2621234773 is a deficient number, since it is larger than the sum of its proper divisors (33180267).

2621234773 is an equidigital number, since it uses as much as digits as its factorization.

2621234773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33180266.

The product of its digits is 84672, while the sum is 37.

The square root of 2621234773 is about 51197.9957908510. The cubic root of 2621234773 is about 1378.8022185713.

It can be divided in two parts, 26212347 and 73, that added together give a triangular number (26212420 = T₇₂₄₀).

The spelling of 2621234773 in words is "two billion, six hundred twenty-one million, two hundred thirty-four thousand, seven hundred seventy-three".