7276742991 has 36 divisors (see below), whose sum is σ = 12314975400. Its totient is φ = 4128189408.

The previous prime is 7276742989. The next prime is 7276742999. The reversal of 7276742991 is 1992476727.

7276742991 is a `hidden beast` number, since 72 + 7 + 67 + 429 + 91 = 666.

It is not a de Polignac number, because 7276742991 - 2¹ = 7276742989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7276742999) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1945 + ... + 120653.

It is an arithmetic number, because the mean of its divisors is an integer number (342082650).

Almost surely, 2^7276742991 is an apocalyptic number.

7276742991 is a deficient number, since it is larger than the sum of its proper divisors (5038232409).

7276742991 is a wasteful number, since it uses less digits than its factorization.

7276742991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118868 (or 118858 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The square root of 7276742991 is about 85303.8275284292. The cubic root of 7276742991 is about 1937.8151432213.

The spelling of 7276742991 in words is "seven billion, two hundred seventy-six million, seven hundred forty-two thousand, nine hundred ninety-one".