21835429654077 has 48 divisors (see below), whose sum is σ = 35485877202048. Its totient is φ = 12837418957440.

The previous prime is 21835429654063. The next prime is 21835429654127. The reversal of 21835429654077 is 77045692453812.

It is a happy number.

21835429654077 is a `hidden beast` number, since 2 + 1 + 83 + 5 + 4 + 2 + 9 + 6 + 540 + 7 + 7 = 666.

It is not a de Polignac number, because 21835429654077 - 2¹⁵ = 21835429621309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21835429654277) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2680374 + ... + 7131287.

It is an arithmetic number, because the mean of its divisors is an integer number (739289108376).

It is a 1-persistent number, because it is pandigital, but 2⋅21835429654077 = 43670859308154 is not.

Almost surely, 2^{21835429654077} is an apocalyptic number.

It is an amenable number.

21835429654077 is a deficient number, since it is larger than the sum of its proper divisors (13650447547971).

21835429654077 is a wasteful number, since it uses less digits than its factorization.

21835429654077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9812530 (or 9812527 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 63.

The spelling of 21835429654077 in words is "twenty-one trillion, eight hundred thirty-five billion, four hundred twenty-nine million, six hundred fifty-four thousand, seventy-seven".