154536738972 has 144 divisors (see below), whose sum is σ = 468587642880. Its totient is φ = 38755221120.

The previous prime is 154536738959. The next prime is 154536738991. The reversal of 154536738972 is 279837635451.

It is a happy number.

154536738972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32613 + ... + 556899.

Almost surely, 2^154536738972 is an apocalyptic number.

154536738972 is a gapful number since it is divisible by the number (12) 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 154536738972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234293821440).

154536738972 is an abundant number, since it is smaller than the sum of its proper divisors (314050903908).

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

154536738972 is a wasteful number, since it uses less digits than its factorization.

154536738972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524352 (or 524339 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 60.

The spelling of 154536738972 in words is "one hundred fifty-four billion, five hundred thirty-six million, seven hundred thirty-eight thousand, nine hundred seventy-two".