83123536488521 has 2 divisors, whose sum is σ = 83123536488522. Its totient is φ = 83123536488520.

The previous prime is 83123536488511. The next prime is 83123536488547. The reversal of 83123536488521 is 12588463532138.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54246465648400 + 28877070840121 = 7365220^2 + 5373739^2 .

It is a cyclic number.

It is not a de Polignac number, because 83123536488521 - 2²² = 83123532294217 is a prime.

It is not a weakly prime, because it can be changed into another prime (83123536488511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41561768244260 + 41561768244261.

It is an arithmetic number, because the mean of its divisors is an integer number (41561768244261).

Almost surely, 2^{83123536488521} is an apocalyptic number.

It is an amenable number.

83123536488521 is a deficient number, since it is larger than the sum of its proper divisors (1).

83123536488521 is an equidigital number, since it uses as much as digits as its factorization.

83123536488521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33177600, while the sum is 59.

The spelling of 83123536488521 in words is "eighty-three trillion, one hundred twenty-three billion, five hundred thirty-six million, four hundred eighty-eight thousand, five hundred twenty-one".