21470134603740 has 96 divisors (see below), whose sum is σ = 60159915814656. Its totient is φ = 5721224071680.

The previous prime is 21470134603739. The next prime is 21470134603747. The reversal of 21470134603740 is 4730643107412.

It is a super-4 number, since 4×21470134603740⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21470134603692 and 21470134603701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21470134603747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575264280 + ... + 575301600.

It is an arithmetic number, because the mean of its divisors is an integer number (626665789736).

Almost surely, 2^{21470134603740} is an apocalyptic number.

21470134603740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21470134603740 is an abundant number, since it is smaller than the sum of its proper divisors (38689781210916).

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

21470134603740 is a wasteful number, since it uses less digits than its factorization.

21470134603740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44019 (or 44017 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 21470134603740 in words is "twenty-one trillion, four hundred seventy billion, one hundred thirty-four million, six hundred three thousand, seven hundred forty".