21470740713678 has 32 divisors (see below), whose sum is σ = 43047471169440. Its totient is φ = 7139251768320.

The previous prime is 21470740713677. The next prime is 21470740713767. The reversal of 21470740713678 is 87631704707412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21470740713677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27238278 + ... + 28015446.

It is an arithmetic number, because the mean of its divisors is an integer number (1345233474045).

Almost surely, 2^{21470740713678} is an apocalyptic number.

21470740713678 is an abundant number, since it is smaller than the sum of its proper divisors (21576730455762).

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

21470740713678 is a wasteful number, since it uses less digits than its factorization.

21470740713678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788532.

The product of its (nonzero) digits is 11063808, while the sum is 57.

The spelling of 21470740713678 in words is "twenty-one trillion, four hundred seventy billion, seven hundred forty million, seven hundred thirteen thousand, six hundred seventy-eight".