38099452621 has 4 divisors (see below), whose sum is σ = 38100494332. Its totient is φ = 38098410912.

The previous prime is 38099452577. The next prime is 38099452637. The reversal of 38099452621 is 12625499083.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14863023396 + 23236429225 = 121914^2 + 152435^2 .

It is a cyclic number.

It is not a de Polignac number, because 38099452621 - 2¹⁷ = 38099321549 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 (38099452681) 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, 463920 + ... + 539833.

It is an arithmetic number, because the mean of its divisors is an integer number (9525123583).

Almost surely, 2^38099452621 is an apocalyptic number.

It is an amenable number.

38099452621 is a deficient number, since it is larger than the sum of its proper divisors (1041711).

38099452621 is a wasteful number, since it uses less digits than its factorization.

38099452621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041710.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 38099452621 in words is "thirty-eight billion, ninety-nine million, four hundred fifty-two thousand, six hundred twenty-one".