7021681980 has 24 divisors (see below), whose sum is σ = 19660709712. Its totient is φ = 1872448512.

The previous prime is 7021681957. The next prime is 7021681999. The reversal of 7021681980 is 891861207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58513957 + ... + 58514076.

It is an arithmetic number, because the mean of its divisors is an integer number (819196238).

Almost surely, 2^7021681980 is an apocalyptic number.

It is an amenable number.

7021681980 is an abundant number, since it is smaller than the sum of its proper divisors (12639027732).

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

7021681980 is a wasteful number, since it uses less digits than its factorization.

7021681980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117028045 (or 117028043 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 7021681980 is about 83795.4770855802. The cubic root of 7021681980 is about 1914.9042011582.

The spelling of 7021681980 in words is "seven billion, twenty-one million, six hundred eighty-one thousand, nine hundred eighty".