853720279144 has 8 divisors (see below), whose sum is σ = 1600725523410. Its totient is φ = 426860139568.

The previous prime is 853720279141. The next prime is 853720279163. The reversal of 853720279144 is 441972027358.

It can be written as a sum of positive squares in only one way, i.e., 814452100900 + 39268178244 = 902470^2 + 198162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 853720279091 and 853720279100.

It is not an unprimeable number, because it can be changed into a prime (853720279141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53357517439 + ... + 53357517454.

Almost surely, 2^853720279144 is an apocalyptic number.

It is an amenable number.

853720279144 is a deficient number, since it is larger than the sum of its proper divisors (747005244266).

853720279144 is a wasteful number, since it uses less digits than its factorization.

853720279144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106715034899 (or 106715034895 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 853720279144 in words is "eight hundred fifty-three billion, seven hundred twenty million, two hundred seventy-nine thousand, one hundred forty-four".