21154325046 has 8 divisors (see below), whose sum is σ = 42308650104. Its totient is φ = 7051441680.

The previous prime is 21154325041. The next prime is 21154325069. The reversal of 21154325046 is 64052345112.

It is a sphenic number, since it is the product of 3 distinct primes.

21154325046 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21154324998 and 21154325016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21154325041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1762860415 + ... + 1762860426.

It is an arithmetic number, because the mean of its divisors is an integer number (5288581263).

Almost surely, 2^21154325046 is an apocalyptic number.

21154325046 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21154325046 is a wasteful number, since it uses less digits than its factorization.

21154325046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525720846.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 21154325046 in words is "twenty-one billion, one hundred fifty-four million, three hundred twenty-five thousand, forty-six".