19440696455 has 8 divisors (see below), whose sum is σ = 23329692672. Its totient is φ = 15551985888.

The previous prime is 19440696449. The next prime is 19440696461. The reversal of 19440696455 is 55469604491.

It is an interprime number because it is at equal distance from previous prime (19440696449) and next prime (19440696461).

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 19440696455 - 2¹⁸ = 19440434311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19440696397 and 19440696406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129929 + ... + 236141.

It is an arithmetic number, because the mean of its divisors is an integer number (2916211584).

Almost surely, 2^19440696455 is an apocalyptic number.

19440696455 is a deficient number, since it is larger than the sum of its proper divisors (3888996217).

19440696455 is a wasteful number, since it uses less digits than its factorization.

19440696455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142825.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 19440696455 in words is "nineteen billion, four hundred forty million, six hundred ninety-six thousand, four hundred fifty-five".