8720432340278 has 16 divisors (see below), whose sum is σ = 13649867944416. Its totient is φ = 4170490125120.

The previous prime is 8720432340241. The next prime is 8720432340299.

8720432340278 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×8720432340278² (a number of 27 digits) contains 22 as substring.

It is a congruent 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, 2155703 + ... + 4699778.

It is an arithmetic number, because the mean of its divisors is an integer number (853116746526).

Almost surely, 2^{8720432340278} is an apocalyptic number.

8720432340278 is a deficient number, since it is larger than the sum of its proper divisors (4929435604138).

8720432340278 is a wasteful number, since it uses less digits than its factorization.

8720432340278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883159.

The product of its (nonzero) digits is 3612672, while the sum is 50.

The spelling of 8720432340278 in words is "eight trillion, seven hundred twenty billion, four hundred thirty-two million, three hundred forty thousand, two hundred seventy-eight".