21034662377049 has 6 divisors (see below), whose sum is σ = 30383401211306. Its totient is φ = 14023108251360.

The previous prime is 21034662377039. The next prime is 21034662377087. The reversal of 21034662377049 is 94077326643012.

It is a happy number.

21034662377049 is a `hidden beast` number, since 2 + 1 + 0 + 3 + 4 + 6 + 623 + 7 + 7 + 0 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19040263155225 + 1994399221824 = 4363515^2 + 1412232^2 .

It is not a de Polignac number, because 21034662377049 - 2⁹ = 21034662376537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21034662376986 and 21034662377004.

It is not an unprimeable number, because it can be changed into a prime (21034662377039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1168592354272 + ... + 1168592354289.

Almost surely, 2^{21034662377049} is an apocalyptic number.

It is an amenable number.

21034662377049 is a deficient number, since it is larger than the sum of its proper divisors (9348738834257).

21034662377049 is a wasteful number, since it uses less digits than its factorization.

21034662377049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337184708567 (or 2337184708564 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 54.

The spelling of 21034662377049 in words is "twenty-one trillion, thirty-four billion, six hundred sixty-two million, three hundred seventy-seven thousand, forty-nine".