21253100262459 has 16 divisors (see below), whose sum is σ = 30685875895584. Its totient is φ = 13006572192000.

The previous prime is 21253100262451. The next prime is 21253100262463. The reversal of 21253100262459 is 95426200135212.

It is not a de Polignac number, because 21253100262459 - 2³ = 21253100262451 is a prime.

It is a super-2 number, since 2×21253100262459² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21253100262459.

It is not an unprimeable number, because it can be changed into a prime (21253100262451) 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, 1505383242 + ... + 1505397359.

It is an arithmetic number, because the mean of its divisors is an integer number (1917867243474).

Almost surely, 2^{21253100262459} is an apocalyptic number.

21253100262459 is a deficient number, since it is larger than the sum of its proper divisors (9432775633125).

21253100262459 is a wasteful number, since it uses less digits than its factorization.

21253100262459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010780798.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 21253100262459 in words is "twenty-one trillion, two hundred fifty-three billion, one hundred million, two hundred sixty-two thousand, four hundred fifty-nine".