34738621621 has 4 divisors (see below), whose sum is σ = 37896678144. Its totient is φ = 31580565100.

The previous prime is 34738621609. The next prime is 34738621637. The reversal of 34738621621 is 12612683743.

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 34738621621 - 2¹⁹ = 34738097333 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 (34738621601) 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, 1579028245 + ... + 1579028266.

It is an arithmetic number, because the mean of its divisors is an integer number (9474169536).

Almost surely, 2^34738621621 is an apocalyptic number.

It is an amenable number.

34738621621 is a deficient number, since it is larger than the sum of its proper divisors (3158056523).

34738621621 is a wasteful number, since it uses less digits than its factorization.

34738621621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3158056522.

The product of its digits is 290304, while the sum is 43.

The spelling of 34738621621 in words is "thirty-four billion, seven hundred thirty-eight million, six hundred twenty-one thousand, six hundred twenty-one".