21547468075474 has 32 divisors (see below), whose sum is σ = 35611427958912. Its totient is φ = 9696559440000.

The previous prime is 21547468075439. The next prime is 21547468075561. The reversal of 21547468075474 is 47457086474512.

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, 28042534 + ... + 28800670.

It is an arithmetic number, because the mean of its divisors is an integer number (1112857123716).

Almost surely, 2^{21547468075474} is an apocalyptic number.

21547468075474 is a deficient number, since it is larger than the sum of its proper divisors (14063959883438).

21547468075474 is a wasteful number, since it uses less digits than its factorization.

21547468075474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771042.

The product of its (nonzero) digits is 210739200, while the sum is 64.

The spelling of 21547468075474 in words is "twenty-one trillion, five hundred forty-seven billion, four hundred sixty-eight million, seventy-five thousand, four hundred seventy-four".