80154778000 has 160 divisors (see below), whose sum is σ = 218256030720. Its totient is φ = 28206720000.

The previous prime is 80154777991. The next prime is 80154778001. The reversal of 80154778000 is 87745108.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (80154778001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623236 + ... + 740764.

It is an arithmetic number, because the mean of its divisors is an integer number (1364100192).

Almost surely, 2^80154778000 is an apocalyptic number.

80154778000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80154778000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109128015360).

80154778000 is an abundant number, since it is smaller than the sum of its proper divisors (138101252720).

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

80154778000 is a wasteful number, since it uses less digits than its factorization.

80154778000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117594 (or 117578 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 40.

The spelling of 80154778000 in words is "eighty billion, one hundred fifty-four million, seven hundred seventy-eight thousand".