80438780856554 has 32 divisors (see below), whose sum is σ = 128102006476800. Its totient is φ = 37750952171520.

The previous prime is 80438780856541. The next prime is 80438780856557. The reversal of 80438780856554 is 45565808783408.

It is a Smith number, since the sum of its digits (71) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (80438780856557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184941719 + ... + 185376149.

It is an arithmetic number, because the mean of its divisors is an integer number (4003187702400).

Almost surely, 2^{80438780856554} is an apocalyptic number.

80438780856554 is a deficient number, since it is larger than the sum of its proper divisors (47663225620246).

80438780856554 is a wasteful number, since it uses less digits than its factorization.

80438780856554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449198.

The product of its (nonzero) digits is 1032192000, while the sum is 71.

The spelling of 80438780856554 in words is "eighty trillion, four hundred thirty-eight billion, seven hundred eighty million, eight hundred fifty-six thousand, five hundred fifty-four".