83436793521 has 16 divisors (see below), whose sum is σ = 113900191680. Its totient is φ = 54300415680.

The previous prime is 83436793457. The next prime is 83436793589. The reversal of 83436793521 is 12539763438.

It is not a de Polignac number, because 83436793521 - 2⁶ = 83436793457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83436893521) 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, 50011 + ... + 411551.

It is an arithmetic number, because the mean of its divisors is an integer number (7118761980).

Almost surely, 2^83436793521 is an apocalyptic number.

It is an amenable number.

83436793521 is a deficient number, since it is larger than the sum of its proper divisors (30463398159).

83436793521 is a wasteful number, since it uses less digits than its factorization.

83436793521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363376.

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

The spelling of 83436793521 in words is "eighty-three billion, four hundred thirty-six million, seven hundred ninety-three thousand, five hundred twenty-one".