7872782045 has 16 divisors (see below), whose sum is σ = 9487393920. Its totient is φ = 6271575744.

The previous prime is 7872782023. The next prime is 7872782053. The reversal of 7872782045 is 5402872787.

It is a cyclic number.

It is not a de Polignac number, because 7872782045 - 2⁸ = 7872781789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7872781984 and 7872782002.

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, 1409879 + ... + 1415451.

It is an arithmetic number, because the mean of its divisors is an integer number (592962120).

Almost surely, 2^7872782045 is an apocalyptic number.

It is an amenable number.

7872782045 is a deficient number, since it is larger than the sum of its proper divisors (1614611875).

7872782045 is a wasteful number, since it uses less digits than its factorization.

7872782045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724.

The product of its (nonzero) digits is 1756160, while the sum is 50.

The square root of 7872782045 is about 88728.6991057572. The cubic root of 7872782045 is about 1989.3418060963.

The spelling of 7872782045 in words is "seven billion, eight hundred seventy-two million, seven hundred eighty-two thousand, forty-five".