83451765545 has 16 divisors (see below), whose sum is σ = 106312642560. Its totient is φ = 62668456704.

The previous prime is 83451765539. The next prime is 83451765623. The reversal of 83451765545 is 54556715438.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 83451765545 - 2⁸ = 83451765289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1263017 + ... + 1327446.

It is an arithmetic number, because the mean of its divisors is an integer number (6644540160).

Almost surely, 2^83451765545 is an apocalyptic number.

83451765545 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83451765545 is a deficient number, since it is larger than the sum of its proper divisors (22860877015).

83451765545 is a wasteful number, since it uses less digits than its factorization.

83451765545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590864.

The product of its digits is 10080000, while the sum is 53.

The spelling of 83451765545 in words is "eighty-three billion, four hundred fifty-one million, seven hundred sixty-five thousand, five hundred forty-five".