7131772372 has 6 divisors (see below), whose sum is σ = 12480601658. Its totient is φ = 3565886184.

The previous prime is 7131772369. The next prime is 7131772393. The reversal of 7131772372 is 2732771317.

It can be written as a sum of positive squares in only one way, i.e., 4086277776 + 3045494596 = 63924^2 + 55186^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891471543 + ... + 891471550.

Almost surely, 2^7131772372 is an apocalyptic number.

It is an amenable number.

7131772372 is a deficient number, since it is larger than the sum of its proper divisors (5348829286).

7131772372 is a wasteful number, since it uses less digits than its factorization.

7131772372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782943097 (or 1782943095 counting only the distinct ones).

The product of its digits is 86436, while the sum is 40.

The square root of 7131772372 is about 84449.8216220733. The cubic root of 7131772372 is about 1924.8600446515.

The spelling of 7131772372 in words is "seven billion, one hundred thirty-one million, seven hundred seventy-two thousand, three hundred seventy-two".