83734396521 has 16 divisors (see below), whose sum is σ = 114447478464. Its totient is φ = 54426786624.

The previous prime is 83734396513. The next prime is 83734396541. The reversal of 83734396521 is 12569343738.

It is not a de Polignac number, because 83734396521 - 2³ = 83734396513 is a prime.

It is a super-2 number, since 2×83734396521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83734396541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510826 + ... + 654531.

It is an arithmetic number, because the mean of its divisors is an integer number (7152967404).

Almost surely, 2^83734396521 is an apocalyptic number.

It is an amenable number.

83734396521 is a deficient number, since it is larger than the sum of its proper divisors (30713081943).

83734396521 is a wasteful number, since it uses less digits than its factorization.

83734396521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165960.

The product of its digits is 3265920, while the sum is 51.

The spelling of 83734396521 in words is "eighty-three billion, seven hundred thirty-four million, three hundred ninety-six thousand, five hundred twenty-one".