83709051854 has 4 divisors (see below), whose sum is σ = 125563577784. Its totient is φ = 41854525926.

The previous prime is 83709051847. The next prime is 83709051863. The reversal of 83709051854 is 45815090738.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45815090738 = 2 ⋅22907545369.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20927262962 + ... + 20927262965.

It is an arithmetic number, because the mean of its divisors is an integer number (31390894446).

Almost surely, 2^83709051854 is an apocalyptic number.

83709051854 is a deficient number, since it is larger than the sum of its proper divisors (41854525930).

83709051854 is a wasteful number, since it uses less digits than its factorization.

83709051854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41854525929.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 83709051854 in words is "eighty-three billion, seven hundred nine million, fifty-one thousand, eight hundred fifty-four".