7381216405 has 8 divisors (see below), whose sum is σ = 9143184384. Its totient is φ = 5714490000.

The previous prime is 7381216391. The next prime is 7381216411. The reversal of 7381216405 is 5046121837.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7381216405 - 2¹³ = 7381208213 is a prime.

It is a super-2 number, since 2×7381216405² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23810221 + ... + 23810530.

It is an arithmetic number, because the mean of its divisors is an integer number (1142898048).

Almost surely, 2^7381216405 is an apocalyptic number.

It is an amenable number.

7381216405 is a deficient number, since it is larger than the sum of its proper divisors (1761967979).

7381216405 is a wasteful number, since it uses less digits than its factorization.

7381216405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47620787.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 7381216405 is about 85914.0058721510. The cubic root of 7381216405 is about 1947.0449569995.

The spelling of 7381216405 in words is "seven billion, three hundred eighty-one million, two hundred sixteen thousand, four hundred five".