83770140685 has 32 divisors (see below), whose sum is σ = 125362980864. Its totient is φ = 52206120000.

The previous prime is 83770140679. The next prime is 83770140721. The reversal of 83770140685 is 58604107738.

It is a happy number.

It is not a de Polignac number, because 83770140685 - 2⁵ = 83770140653 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1485760 + ... + 1541110.

It is an arithmetic number, because the mean of its divisors is an integer number (3917593152).

Almost surely, 2^83770140685 is an apocalyptic number.

It is an amenable number.

83770140685 is a deficient number, since it is larger than the sum of its proper divisors (41592840179).

83770140685 is a wasteful number, since it uses less digits than its factorization.

83770140685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59305.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 83770140685 in words is "eighty-three billion, seven hundred seventy million, one hundred forty thousand, six hundred eighty-five".