3128130136372 has 6 divisors (see below), whose sum is σ = 5474227738658. Its totient is φ = 1564065068184.

The previous prime is 3128130136337. The next prime is 3128130136387. The reversal of 3128130136372 is 2736310318213.

It can be written as a sum of positive squares in only one way, i.e., 2899343940516 + 228786195856 = 1702746^2 + 478316^2 .

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, 391016267043 + ... + 391016267050.

Almost surely, 2^{3128130136372} is an apocalyptic number.

It is an amenable number.

3128130136372 is a deficient number, since it is larger than the sum of its proper divisors (2346097602286).

3128130136372 is a wasteful number, since it uses less digits than its factorization.

3128130136372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782032534097 (or 782032534095 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 3128130136372 in words is "three trillion, one hundred twenty-eight billion, one hundred thirty million, one hundred thirty-six thousand, three hundred seventy-two".