21603162242623 has 8 divisors (see below), whose sum is σ = 23583641817008. Its totient is φ = 19668210934464.

The previous prime is 21603162242587. The next prime is 21603162242657. The reversal of 21603162242623 is 32624226130612.

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

It is a cyclic number.

It is not a de Polignac number, because 21603162242623 - 2²⁹ = 21602625371711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21603162242693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11382065565 + ... + 11382067462.

It is an arithmetic number, because the mean of its divisors is an integer number (2947955227126).

Almost surely, 2^{21603162242623} is an apocalyptic number.

21603162242623 is a deficient number, since it is larger than the sum of its proper divisors (1980479574385).

21603162242623 is a wasteful number, since it uses less digits than its factorization.

21603162242623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22764133113.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 21603162242623 in words is "twenty-one trillion, six hundred three billion, one hundred sixty-two million, two hundred forty-two thousand, six hundred twenty-three".