7721472037 has 8 divisors (see below), whose sum is σ = 7797715200. Its totient is φ = 7645327344.

The previous prime is 7721472007. The next prime is 7721472079. The reversal of 7721472037 is 7302741277.

It is a happy number.

7721472037 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7721472037 - 2²³ = 7713083429 is a prime.

It is a super-2 number, since 2×7721472037² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7721472007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138264 + ... + 185902.

It is an arithmetic number, because the mean of its divisors is an integer number (974714400).

Almost surely, 2^7721472037 is an apocalyptic number.

It is an amenable number.

7721472037 is a deficient number, since it is larger than the sum of its proper divisors (76243163).

7721472037 is a wasteful number, since it uses less digits than its factorization.

7721472037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49235.

The product of its (nonzero) digits is 115248, while the sum is 40.

The square root of 7721472037 is about 87871.9069839730. The cubic root of 7721472037 is about 1976.5146346953.

The spelling of 7721472037 in words is "seven billion, seven hundred twenty-one million, four hundred seventy-two thousand, thirty-seven".