21496860470 has 32 divisors (see below), whose sum is σ = 40481513856. Its totient is φ = 8210521600.

The previous prime is 21496860409. The next prime is 21496860481. The reversal of 21496860470 is 7406869412.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538511 + ... + 577050.

It is an arithmetic number, because the mean of its divisors is an integer number (1265047308).

Almost surely, 2^21496860470 is an apocalyptic number.

21496860470 is a deficient number, since it is larger than the sum of its proper divisors (18984653386).

21496860470 is a wasteful number, since it uses less digits than its factorization.

21496860470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115656.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 21496860470 in words is "twenty-one billion, four hundred ninety-six million, eight hundred sixty thousand, four hundred seventy".