21350154005400 has 96 divisors (see below), whose sum is σ = 72202339022400. Its totient is φ = 5175794908800.

The previous prime is 21350154005329. The next prime is 21350154005423. The reversal of 21350154005400 is 450045105312.

It is a super-3 number, since 3×21350154005400³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1617429310 + ... + 1617442509.

It is an arithmetic number, because the mean of its divisors is an integer number (752107698150).

Almost surely, 2^{21350154005400} is an apocalyptic number.

21350154005400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21350154005400 is an abundant number, since it is smaller than the sum of its proper divisors (50852185017000).

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

21350154005400 is a wasteful number, since it uses less digits than its factorization.

21350154005400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234871849 (or 3234871840 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 21350154005400 in words is "twenty-one trillion, three hundred fifty billion, one hundred fifty-four million, five thousand, four hundred".