8103140047721 has 4 divisors (see below), whose sum is σ = 8104726726032. Its totient is φ = 8101553369412.

The previous prime is 8103140047663. The next prime is 8103140047729. The reversal of 8103140047721 is 1277400413018.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8103140047721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8103140047729) 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, 793331495 + ... + 793341708.

It is an arithmetic number, because the mean of its divisors is an integer number (2026181681508).

Almost surely, 2^{8103140047721} is an apocalyptic number.

It is an amenable number.

8103140047721 is a deficient number, since it is larger than the sum of its proper divisors (1586678311).

8103140047721 is a wasteful number, since it uses less digits than its factorization.

8103140047721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586678310.

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 8103140047721 in words is "eight trillion, one hundred three billion, one hundred forty million, forty-seven thousand, seven hundred twenty-one".