19406071572745 has 64 divisors (see below), whose sum is σ = 28103095367424. Its totient is φ = 12673408158720.

The previous prime is 19406071572737. The next prime is 19406071572763. The reversal of 19406071572745 is 54727517060491.

It is not a de Polignac number, because 19406071572745 - 2³ = 19406071572737 is a prime.

It is a super-2 number, since 2×19406071572745² (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 19406071572745.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149485234 + ... + 149614996.

It is an arithmetic number, because the mean of its divisors is an integer number (439110865116).

Almost surely, 2^{19406071572745} is an apocalyptic number.

It is an amenable number.

19406071572745 is a deficient number, since it is larger than the sum of its proper divisors (8697023794679).

19406071572745 is a wasteful number, since it uses less digits than its factorization.

19406071572745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135482.

The product of its (nonzero) digits is 14817600, while the sum is 58.

The spelling of 19406071572745 in words is "nineteen trillion, four hundred six billion, seventy-one million, five hundred seventy-two thousand, seven hundred forty-five".