21470075245442 has 16 divisors (see below), whose sum is σ = 32358671067840. Its totient is φ = 10683889018992.

The previous prime is 21470075245433. The next prime is 21470075245483. The reversal of 21470075245442 is 24454257007412.

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, 8217968 + ... + 10510715.

It is an arithmetic number, because the mean of its divisors is an integer number (2022416941740).

Almost surely, 2^{21470075245442} is an apocalyptic number.

21470075245442 is a deficient number, since it is larger than the sum of its proper divisors (10888595822398).

21470075245442 is a wasteful number, since it uses less digits than its factorization.

21470075245442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18731417.

The product of its (nonzero) digits is 2508800, while the sum is 47.

The spelling of 21470075245442 in words is "twenty-one trillion, four hundred seventy billion, seventy-five million, two hundred forty-five thousand, four hundred forty-two".