1372877851871 has 4 divisors (see below), whose sum is σ = 1372888282272. Its totient is φ = 1372867421472.

The previous prime is 1372877851819. The next prime is 1372877851957. The reversal of 1372877851871 is 1781587782731.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1372877851871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1372877851798 and 1372877851807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372877851801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5015210 + ... + 5281863.

It is an arithmetic number, because the mean of its divisors is an integer number (343222070568).

Almost surely, 2^{1372877851871} is an apocalyptic number.

1372877851871 is a deficient number, since it is larger than the sum of its proper divisors (10430401).

1372877851871 is a wasteful number, since it uses less digits than its factorization.

1372877851871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430400.

The product of its digits is 36879360, while the sum is 65.

The spelling of 1372877851871 in words is "one trillion, three hundred seventy-two billion, eight hundred seventy-seven million, eight hundred fifty-one thousand, eight hundred seventy-one".