83660954749 has 4 divisors (see below), whose sum is σ = 83666170080. Its totient is φ = 83655739420.

The previous prime is 83660954747. The next prime is 83660954753. The reversal of 83660954749 is 94745906638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83660954749 - 2¹ = 83660954747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83660954743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2583529 + ... + 2615710.

It is an arithmetic number, because the mean of its divisors is an integer number (20916542520).

Almost surely, 2^83660954749 is an apocalyptic number.

It is an amenable number.

83660954749 is a deficient number, since it is larger than the sum of its proper divisors (5215331).

83660954749 is a wasteful number, since it uses less digits than its factorization.

83660954749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215330.

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 83660954749 in words is "eighty-three billion, six hundred sixty million, nine hundred fifty-four thousand, seven hundred forty-nine".