19954026755065 has 16 divisors (see below), whose sum is σ = 26907904977408. Its totient is φ = 14094616890816.

The previous prime is 19954026755021. The next prime is 19954026755081. The reversal of 19954026755065 is 56055762045991.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 19954026755065 - 2¹³ = 19954026746873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19954026754988 and 19954026755006.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6673586049 + ... + 6673589038.

It is an arithmetic number, because the mean of its divisors is an integer number (1681744061088).

Almost surely, 2^{19954026755065} is an apocalyptic number.

It is an amenable number.

19954026755065 is a deficient number, since it is larger than the sum of its proper divisors (6953878222343).

19954026755065 is a wasteful number, since it uses less digits than its factorization.

19954026755065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13347175128.

The product of its (nonzero) digits is 102060000, while the sum is 64.

The spelling of 19954026755065 in words is "nineteen trillion, nine hundred fifty-four billion, twenty-six million, seven hundred fifty-five thousand, sixty-five".