21061433126510 has 32 divisors (see below), whose sum is σ = 43326597288960. Its totient is φ = 7221026024352.

The previous prime is 21061433126491. The next prime is 21061433126603. The reversal of 21061433126510 is 1562133416012.

It is a super-4 number, since 4×21061433126510⁴ (a number of 54 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15546347 + ... + 16846713.

It is an arithmetic number, because the mean of its divisors is an integer number (1353956165280).

Almost surely, 2^{21061433126510} is an apocalyptic number.

21061433126510 is an abundant number, since it is smaller than the sum of its proper divisors (22265164162450).

21061433126510 is a wasteful number, since it uses less digits than its factorization.

21061433126510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531760.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 21061433126510 in words is "twenty-one trillion, sixty-one billion, four hundred thirty-three million, one hundred twenty-six thousand, five hundred ten".