2039860505642 has 4 divisors (see below), whose sum is σ = 3059790758466. Its totient is φ = 1019930252820.

The previous prime is 2039860505611. The next prime is 2039860505651. The reversal of 2039860505642 is 2465050689302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1406930471881 + 632930033761 = 1186141^2 + 795569^2 .

It is a super-2 number, since 2×2039860505642² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509965126409 + ... + 509965126412.

Almost surely, 2^{2039860505642} is an apocalyptic number.

2039860505642 is a deficient number, since it is larger than the sum of its proper divisors (1019930252824).

2039860505642 is a wasteful number, since it uses less digits than its factorization.

2039860505642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019930252823.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 2039860505642 in words is "two trillion, thirty-nine billion, eight hundred sixty million, five hundred five thousand, six hundred forty-two".