21477320061342 has 64 divisors (see below), whose sum is σ = 44886153395520. Its totient is φ = 6844656743424.

The previous prime is 21477320061331. The next prime is 21477320061383. The reversal of 21477320061342 is 24316002377412.

It is a super-2 number, since 2×21477320061342² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21477320061294 and 21477320061303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1896088 + ... + 6822740.

It is an arithmetic number, because the mean of its divisors is an integer number (701346146805).

Almost surely, 2^{21477320061342} is an apocalyptic number.

21477320061342 is an abundant number, since it is smaller than the sum of its proper divisors (23408833334178).

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

21477320061342 is a wasteful number, since it uses less digits than its factorization.

21477320061342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927037.

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

The spelling of 21477320061342 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred twenty million, sixty-one thousand, three hundred forty-two".