145554418778378 has 16 divisors (see below), whose sum is σ = 218349274492800. Its totient is φ = 72771327556896.

The previous prime is 145554418778297. The next prime is 145554418778381. The reversal of 145554418778378 is 873877814455541.

It is a super-2 number, since 2×145554418778378² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145554418778299 and 145554418778308.

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, 2299442573 + ... + 2299505871.

It is an arithmetic number, because the mean of its divisors is an integer number (13646829655800).

Almost surely, 2^{145554418778378} is an apocalyptic number.

145554418778378 is a deficient number, since it is larger than the sum of its proper divisors (72794855714422).

145554418778378 is a wasteful number, since it uses less digits than its factorization.

145554418778378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138061.

The product of its digits is 4214784000, while the sum is 77.

The spelling of 145554418778378 in words is "one hundred forty-five trillion, five hundred fifty-four billion, four hundred eighteen million, seven hundred seventy-eight thousand, three hundred seventy-eight".