21149170033869 has 16 divisors (see below), whose sum is σ = 31356261171840. Its totient is φ = 14088575851200.

The previous prime is 21149170033841. The next prime is 21149170033877. The reversal of 21149170033869 is 96833007194112.

21149170033869 is a `hidden beast` number, since 2 + 1 + 1 + 491 + 70 + 0 + 3 + 3 + 86 + 9 = 666.

It is not a de Polignac number, because 21149170033869 - 2³¹ = 21147022550221 is a prime.

It is a super-2 number, since 2×21149170033869² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21149170033829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301932057 + ... + 302002094.

It is an arithmetic number, because the mean of its divisors is an integer number (1959766323240).

Almost surely, 2^{21149170033869} is an apocalyptic number.

It is an amenable number.

21149170033869 is a deficient number, since it is larger than the sum of its proper divisors (10207091137971).

21149170033869 is a wasteful number, since it uses less digits than its factorization.

21149170033869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603935457 (or 603935451 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 21149170033869 in words is "twenty-one trillion, one hundred forty-nine billion, one hundred seventy million, thirty-three thousand, eight hundred sixty-nine".