21877029741 has 16 divisors (see below), whose sum is σ = 33660084224. Its totient is φ = 12379788144.

The previous prime is 21877029721. The next prime is 21877029767. The reversal of 21877029741 is 14792077812.

It is not a de Polignac number, because 21877029741 - 2²³ = 21868641133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21877029721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5054941 + ... + 5059266.

It is an arithmetic number, because the mean of its divisors is an integer number (2103755264).

Almost surely, 2^21877029741 is an apocalyptic number.

21877029741 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21877029741 is a deficient number, since it is larger than the sum of its proper divisors (11783054483).

21877029741 is a wasteful number, since it uses less digits than its factorization.

21877029741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10114320.

The product of its (nonzero) digits is 395136, while the sum is 48.

The spelling of 21877029741 in words is "twenty-one billion, eight hundred seventy-seven million, twenty-nine thousand, seven hundred forty-one".