21555030103534 has 8 divisors (see below), whose sum is σ = 32332891271688. Its totient is φ = 10777399679640.

The previous prime is 21555030103499. The next prime is 21555030103553. The reversal of 21555030103534 is 43530103055512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21555030103493 and 21555030103502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57452337 + ... + 57826300.

It is an arithmetic number, because the mean of its divisors is an integer number (4041611408961).

Almost surely, 2^{21555030103534} is an apocalyptic number.

21555030103534 is a deficient number, since it is larger than the sum of its proper divisors (10777861168154).

21555030103534 is a wasteful number, since it uses less digits than its factorization.

21555030103534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115372130.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 21555030103534 in words is "twenty-one trillion, five hundred fifty-five billion, thirty million, one hundred three thousand, five hundred thirty-four".