745777247138 has 16 divisors (see below), whose sum is σ = 1394700306624. Its totient is φ = 290562563760.

The previous prime is 745777247051. The next prime is 745777247219. The reversal of 745777247138 is 831742777547.

It is a Curzon 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, 2421354545 + ... + 2421354852.

It is an arithmetic number, because the mean of its divisors is an integer number (87168769164).

Almost surely, 2^745777247138 is an apocalyptic number.

745777247138 is a deficient number, since it is larger than the sum of its proper divisors (648923059486).

745777247138 is a wasteful number, since it uses less digits than its factorization.

745777247138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842709417.

The product of its digits is 64538880, while the sum is 62.

The spelling of 745777247138 in words is "seven hundred forty-five billion, seven hundred seventy-seven million, two hundred forty-seven thousand, one hundred thirty-eight".