1721372140076 has 6 divisors (see below), whose sum is σ = 3012401245140. Its totient is φ = 860686070036.

The previous prime is 1721372140073. The next prime is 1721372140093. The reversal of 1721372140076 is 6700412731271.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1721372140073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215171517506 + ... + 215171517513.

It is an arithmetic number, because the mean of its divisors is an integer number (502066874190).

Almost surely, 2^{1721372140076} is an apocalyptic number.

It is an amenable number.

1721372140076 is a deficient number, since it is larger than the sum of its proper divisors (1291029105064).

1721372140076 is a wasteful number, since it uses less digits than its factorization.

1721372140076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430343035023 (or 430343035021 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 1721372140076 in words is "one trillion, seven hundred twenty-one billion, three hundred seventy-two million, one hundred forty thousand, seventy-six".