545777777545 has 72 divisors (see below), whose sum is σ = 890882169408. Its totient is φ = 314053534080.

The previous prime is 545777777407. The next prime is 545777777557.

545777777545 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 545777777545 - 2²³ = 545769388937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 334434 + ... + 1096996.

It is an arithmetic number, because the mean of its divisors is an integer number (12373363464).

Almost surely, 2^545777777545 is an apocalyptic number.

545777777545 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

545777777545 is a deficient number, since it is larger than the sum of its proper divisors (345104391863).

545777777545 is a wasteful number, since it uses less digits than its factorization.

545777777545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762623 (or 762599 counting only the distinct ones).

The product of its digits is 1176490000, while the sum is 70.

The spelling of 545777777545 in words is "five hundred forty-five billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, five hundred forty-five".