83732379491 has 2 divisors, whose sum is σ = 83732379492. Its totient is φ = 83732379490.

The previous prime is 83732379487. The next prime is 83732379529. The reversal of 83732379491 is 19497323738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83732379491 - 2² = 83732379487 is a prime.

It is a super-2 number, since 2×83732379491² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (83732379461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41866189745 + 41866189746.

It is an arithmetic number, because the mean of its divisors is an integer number (41866189746).

Almost surely, 2^83732379491 is an apocalyptic number.

83732379491 is a deficient number, since it is larger than the sum of its proper divisors (1).

83732379491 is an equidigital number, since it uses as much as digits as its factorization.

83732379491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 56.

The spelling of 83732379491 in words is "eighty-three billion, seven hundred thirty-two million, three hundred seventy-nine thousand, four hundred ninety-one".