245691989455 has 16 divisors (see below), whose sum is σ = 324817643808. Its totient is φ = 176915920000.

The previous prime is 245691989449. The next prime is 245691989483. The reversal of 245691989455 is 554989196542.

It is not a de Polignac number, because 245691989455 - 2¹⁷ = 245691858383 is a prime.

It is a Duffinian number.

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, 22108936 + ... + 22120045.

It is an arithmetic number, because the mean of its divisors is an integer number (20301102738).

Almost surely, 2^245691989455 is an apocalyptic number.

245691989455 is a deficient number, since it is larger than the sum of its proper divisors (79125654353).

245691989455 is a wasteful number, since it uses less digits than its factorization.

245691989455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44229098.

The product of its digits is 139968000, while the sum is 67.

The spelling of 245691989455 in words is "two hundred forty-five billion, six hundred ninety-one million, nine hundred eighty-nine thousand, four hundred fifty-five".