21477320106734 has 16 divisors (see below), whose sum is σ = 33015527022240. Its totient is φ = 10472363341440.

The previous prime is 21477320106733. The next prime is 21477320106743. The reversal of 21477320106734 is 43760102377412.

It is a super-2 number, since 2×21477320106734² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21477320106731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54529754 + ... + 54922205.

It is an arithmetic number, because the mean of its divisors is an integer number (2063470438890).

Almost surely, 2^{21477320106734} is an apocalyptic number.

21477320106734 is a deficient number, since it is larger than the sum of its proper divisors (11538206915506).

21477320106734 is a wasteful number, since it uses less digits than its factorization.

21477320106734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109454395.

The product of its (nonzero) digits is 1185408, while the sum is 47.

The spelling of 21477320106734 in words is "twenty-one trillion, four hundred seventy-seven billion, three hundred twenty million, one hundred six thousand, seven hundred thirty-four".