81454698455 has 16 divisors (see below), whose sum is σ = 105567918624. Its totient is φ = 59977799040.

The previous prime is 81454698419. The next prime is 81454698509. The reversal of 81454698455 is 55489645418.

It is not a de Polignac number, because 81454698455 - 2¹⁰ = 81454697431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81454698394 and 81454698403.

It is a congruent number.

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, 1783136 + ... + 1828245.

It is an arithmetic number, because the mean of its divisors is an integer number (6597994914).

Almost surely, 2^81454698455 is an apocalyptic number.

81454698455 is a deficient number, since it is larger than the sum of its proper divisors (24113220169).

81454698455 is a wasteful number, since it uses less digits than its factorization.

81454698455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611746.

The product of its digits is 27648000, while the sum is 59.

The spelling of 81454698455 in words is "eighty-one billion, four hundred fifty-four million, six hundred ninety-eight thousand, four hundred fifty-five".