1851122707472 has 10 divisors (see below), whose sum is σ = 3586550245758. Its totient is φ = 925561353728.

The previous prime is 1851122707403. The next prime is 1851122707477. The reversal of 1851122707472 is 2747072211581.

It can be written as a sum of positive squares in only one way, i.e., 1312390195216 + 538732512256 = 1145596^2 + 733984^2 .

It is not an unprimeable number, because it can be changed into a prime (1851122707477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57847584593 + ... + 57847584624.

Almost surely, 2^{1851122707472} is an apocalyptic number.

It is an amenable number.

1851122707472 is a deficient number, since it is larger than the sum of its proper divisors (1735427538286).

1851122707472 is a wasteful number, since it uses less digits than its factorization.

1851122707472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115695169225 (or 115695169219 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 47.

The spelling of 1851122707472 in words is "one trillion, eight hundred fifty-one billion, one hundred twenty-two million, seven hundred seven thousand, four hundred seventy-two".