7994521145141 has 4 divisors (see below), whose sum is σ = 8072137855392. Its totient is φ = 7916904434892.

The previous prime is 7994521145137. The next prime is 7994521145147. The reversal of 7994521145141 is 1415411254997.

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 not a de Polignac number, because 7994521145141 - 2² = 7994521145137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7994521145147) 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, 38808354971 + ... + 38808355176.

It is an arithmetic number, because the mean of its divisors is an integer number (2018034463848).

Almost surely, 2^{7994521145141} is an apocalyptic number.

It is an amenable number.

7994521145141 is a deficient number, since it is larger than the sum of its proper divisors (77616710251).

7994521145141 is a wasteful number, since it uses less digits than its factorization.

7994521145141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77616710250.

The product of its digits is 1814400, while the sum is 53.

The spelling of 7994521145141 in words is "seven trillion, nine hundred ninety-four billion, five hundred twenty-one million, one hundred forty-five thousand, one hundred forty-one".