139645500865268 has 24 divisors (see below), whose sum is σ = 249758147491944. Its totient is φ = 68298678057600.

The previous prime is 139645500865267. The next prime is 139645500865271. The reversal of 139645500865268 is 862568005546931.

It can be written as a sum of positive squares in 4 ways, for example, as 5090790413284 + 134554710451984 = 2256278^2 + 11599772^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139645500865198 and 139645500865207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139645500865261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580943755 + ... + 1581032082.

It is an arithmetic number, because the mean of its divisors is an integer number (10406589478831).

Almost surely, 2^{139645500865268} is an apocalyptic number.

It is an amenable number.

139645500865268 is a deficient number, since it is larger than the sum of its proper divisors (110112646626676).

139645500865268 is a wasteful number, since it uses less digits than its factorization.

139645500865268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161976083 (or 3161976081 counting only the distinct ones).

The product of its (nonzero) digits is 373248000, while the sum is 68.

The spelling of 139645500865268 in words is "one hundred thirty-nine trillion, six hundred forty-five billion, five hundred million, eight hundred sixty-five thousand, two hundred sixty-eight".