7900021000202 has 24 divisors (see below), whose sum is σ = 12635476485156. Its totient is φ = 3703536670464.

The previous prime is 7900021000147. The next prime is 7900021000211. The reversal of 7900021000202 is 2020001200097.

It can be written as a sum of positive squares in 2 ways, for example, as 7435770913321 + 464250086881 = 2726861^2 + 681359^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56331293 + ... + 56471360.

Almost surely, 2^{7900021000202} is an apocalyptic number.

7900021000202 is a deficient number, since it is larger than the sum of its proper divisors (4735455484954).

7900021000202 is a wasteful number, since it uses less digits than its factorization.

7900021000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112802790 (or 112802771 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 7900021000202 its reverse (2020001200097), we get a palindrome (9920022200299).

The spelling of 7900021000202 in words is "seven trillion, nine hundred billion, twenty-one million, two hundred two", and thus it is an aban number.