21134156413245 has 16 divisors (see below), whose sum is σ = 34368988791552. Its totient is φ = 11086770576960.

The previous prime is 21134156413177. The next prime is 21134156413291. The reversal of 21134156413245 is 54231465143112.

It is not a de Polignac number, because 21134156413245 - 2²² = 21134152218941 is a prime.

It is a super-2 number, since 2×21134156413245² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21134156413197 and 21134156413206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11548718437 + ... + 11548720266.

It is an arithmetic number, because the mean of its divisors is an integer number (2148061799472).

Almost surely, 2^{21134156413245} is an apocalyptic number.

It is an amenable number.

21134156413245 is a deficient number, since it is larger than the sum of its proper divisors (13234832378307).

21134156413245 is a wasteful number, since it uses less digits than its factorization.

21134156413245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23097438772.

The product of its digits is 345600, while the sum is 42.

The spelling of 21134156413245 in words is "twenty-one trillion, one hundred thirty-four billion, one hundred fifty-six million, four hundred thirteen thousand, two hundred forty-five".