1772671872765 has 32 divisors (see below), whose sum is σ = 3003392635776. Its totient is φ = 889729413120.

The previous prime is 1772671872689. The next prime is 1772671872773. The reversal of 1772671872765 is 5672781762771.

It is not a de Polignac number, because 1772671872765 - 2⁷ = 1772671872637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1772671872696 and 1772671872705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2487030 + ... + 3119400.

It is an arithmetic number, because the mean of its divisors is an integer number (93856019868).

Almost surely, 2^{1772671872765} is an apocalyptic number.

1772671872765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1772671872765 is a deficient number, since it is larger than the sum of its proper divisors (1230720763011).

1772671872765 is a wasteful number, since it uses less digits than its factorization.

1772671872765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643389.

The product of its digits is 96808320, while the sum is 66.

The spelling of 1772671872765 in words is "one trillion, seven hundred seventy-two billion, six hundred seventy-one million, eight hundred seventy-two thousand, seven hundred sixty-five".