80428857815555 has 8 divisors (see below), whose sum is σ = 97955146235472. Its totient is φ = 63382741681248.

The previous prime is 80428857815519. The next prime is 80428857815557. The reversal of 80428857815555 is 55551875882408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80428857815555 - 2⁶ = 80428857815491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80428857815557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120043071032 + ... + 120043071701.

It is an arithmetic number, because the mean of its divisors is an integer number (12244393279434).

Almost surely, 2^{80428857815555} is an apocalyptic number.

80428857815555 is a deficient number, since it is larger than the sum of its proper divisors (17526288419917).

80428857815555 is a wasteful number, since it uses less digits than its factorization.

80428857815555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240086142805.

The product of its (nonzero) digits is 716800000, while the sum is 71.

The spelling of 80428857815555 in words is "eighty trillion, four hundred twenty-eight billion, eight hundred fifty-seven million, eight hundred fifteen thousand, five hundred fifty-five".