21403173001375 has 32 divisors (see below), whose sum is σ = 29149573939200. Its totient is φ = 15560534404000.

The previous prime is 21403173001363. The next prime is 21403173001429. The reversal of 21403173001375 is 57310037130412.

It is not a de Polignac number, because 21403173001375 - 2⁹ = 21403173000863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1255266 + ... + 6661984.

It is an arithmetic number, because the mean of its divisors is an integer number (910924185600).

Almost surely, 2^{21403173001375} is an apocalyptic number.

21403173001375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21403173001375 is a deficient number, since it is larger than the sum of its proper divisors (7746400937825).

21403173001375 is a wasteful number, since it uses less digits than its factorization.

21403173001375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5409624 (or 5409614 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 37.

The spelling of 21403173001375 in words is "twenty-one trillion, four hundred three billion, one hundred seventy-three million, one thousand, three hundred seventy-five".