21770583458 has 32 divisors (see below), whose sum is σ = 37182075840. Its totient is φ = 9477138240.

The previous prime is 21770583421. The next prime is 21770583467. The reversal of 21770583458 is 85438507712.

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, 15068 + ... + 209208.

It is an arithmetic number, because the mean of its divisors is an integer number (1161939870).

Almost surely, 2^21770583458 is an apocalyptic number.

21770583458 is a deficient number, since it is larger than the sum of its proper divisors (15411492382).

21770583458 is a wasteful number, since it uses less digits than its factorization.

21770583458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194402.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 21770583458 in words is "twenty-one billion, seven hundred seventy million, five hundred eighty-three thousand, four hundred fifty-eight".