80291461278 has 128 divisors (see below), whose sum is σ = 206010556416. Its totient is φ = 20329574400.

The previous prime is 80291461253. The next prime is 80291461321. The reversal of 80291461278 is 87216419208.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 769938 + ... + 867978.

It is an arithmetic number, because the mean of its divisors is an integer number (1609457472).

Almost surely, 2^80291461278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80291461278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103005278208).

80291461278 is an abundant number, since it is smaller than the sum of its proper divisors (125719095138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80291461278 is a wasteful number, since it uses less digits than its factorization.

80291461278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98138.

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 80291461278 in words is "eighty billion, two hundred ninety-one million, four hundred sixty-one thousand, two hundred seventy-eight".