7213591980 has 144 divisors (see below), whose sum is σ = 26478204480. Its totient is φ = 1551826944.

The previous prime is 7213591969. The next prime is 7213592011. The reversal of 7213591980 is 891953127.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146965 + ... + 189804.

It is an arithmetic number, because the mean of its divisors is an integer number (183876420).

Almost surely, 2^7213591980 is an apocalyptic number.

7213591980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7213591980 is an abundant number, since it is smaller than the sum of its proper divisors (19264612500).

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

7213591980 is a wasteful number, since it uses less digits than its factorization.

7213591980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336808 (or 336803 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 7213591980 is about 84932.8674895650. The cubic root of 7213591980 is about 1932.1930898921.

The spelling of 7213591980 in words is "seven billion, two hundred thirteen million, five hundred ninety-one thousand, nine hundred eighty".