154391040000 has 390 divisors, whose sum is σ = 557359920546. Its totient is φ = 41164800000.

The previous prime is 154391039993. The next prime is 154391040049. The reversal of 154391040000 is 40193451.

It can be written as a sum of positive squares in 5 ways, for example, as 67983261696 + 86407778304 = 260736^2 + 293952^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 23036650 + ... + 23043350.

Almost surely, 2^154391040000 is an apocalyptic number.

154391040000 is a gapful number since it is divisible by the number (10) 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 154391040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278679960273).

154391040000 is an abundant number, since it is smaller than the sum of its proper divisors (402968880546).

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

154391040000 is an frugal number, since it uses more digits than its factorization.

154391040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6751 (or 6711 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 154391040000 in words is "one hundred fifty-four billion, three hundred ninety-one million, forty thousand".