80688887554 has 32 divisors (see below), whose sum is σ = 132636289536. Its totient is φ = 36510481920.

The previous prime is 80688887437. The next prime is 80688887581. The reversal of 80688887554 is 45578888608.

It is a super-2 number, since 2×80688887554² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80688887554.

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, 4705404 + ... + 4722520.

It is an arithmetic number, because the mean of its divisors is an integer number (4144884048).

Almost surely, 2^80688887554 is an apocalyptic number.

80688887554 is a deficient number, since it is larger than the sum of its proper divisors (51947401982).

80688887554 is a wasteful number, since it uses less digits than its factorization.

80688887554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18090.

The product of its (nonzero) digits is 137625600, while the sum is 67.

The spelling of 80688887554 in words is "eighty billion, six hundred eighty-eight million, eight hundred eighty-seven thousand, five hundred fifty-four".