7132772781 has 12 divisors (see below), whose sum is σ = 10522105152. Its totient is φ = 4654007496.

The previous prime is 7132772723. The next prime is 7132772783. The reversal of 7132772781 is 1872772317.

It is not a de Polignac number, because 7132772781 - 2¹⁷ = 7132641709 is a prime.

It is a super-2 number, since 2×7132772781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7132772783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8430751 + ... + 8431596.

It is an arithmetic number, because the mean of its divisors is an integer number (876842096).

Almost surely, 2^7132772781 is an apocalyptic number.

It is an amenable number.

7132772781 is a deficient number, since it is larger than the sum of its proper divisors (3389332371).

7132772781 is a wasteful number, since it uses less digits than its factorization.

7132772781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16862400 (or 16862397 counting only the distinct ones).

The product of its digits is 230496, while the sum is 45.

The square root of 7132772781 is about 84455.7445115488. The cubic root of 7132772781 is about 1924.9500436578.

The spelling of 7132772781 in words is "seven billion, one hundred thirty-two million, seven hundred seventy-two thousand, seven hundred eighty-one".