7121510002000 has 80 divisors (see below), whose sum is σ = 17221822143552. Its totient is φ = 2848271337600.

The previous prime is 7121510001971. The next prime is 7121510002021. The reversal of 7121510002000 is 2000151217.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17290459 + ... + 17697541.

Almost surely, 2^{7121510002000} is an apocalyptic number.

It is an amenable number.

7121510002000 is an abundant number, since it is smaller than the sum of its proper divisors (10100312141552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7121510002000 is a wasteful number, since it uses less digits than its factorization.

7121510002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415853 (or 415837 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

Adding to 7121510002000 its reverse (2000151217), we get a palindrome (7123510153217).

The spelling of 7121510002000 in words is "seven trillion, one hundred twenty-one billion, five hundred ten million, two thousand".