76613721011533 has 2 divisors, whose sum is σ = 76613721011534. Its totient is φ = 76613721011532.

The previous prime is 76613721011423. The next prime is 76613721011563. The reversal of 76613721011533 is 33511012731667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69810737299524 + 6802983712009 = 8355282^2 + 2608253^2 .

It is a cyclic number.

It is not a de Polignac number, because 76613721011533 - 2⁹ = 76613721011021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76613721011563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38306860505766 + 38306860505767.

It is an arithmetic number, because the mean of its divisors is an integer number (38306860505767).

Almost surely, 2^{76613721011533} is an apocalyptic number.

It is an amenable number.

76613721011533 is a deficient number, since it is larger than the sum of its proper divisors (1).

76613721011533 is an equidigital number, since it uses as much as digits as its factorization.

76613721011533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280, while the sum is 46.

The spelling of 76613721011533 in words is "seventy-six trillion, six hundred thirteen billion, seven hundred twenty-one million, eleven thousand, five hundred thirty-three".