21601458750154 has 8 divisors (see below), whose sum is σ = 32429858656608. Its totient is φ = 10791505864620.

The previous prime is 21601458750121. The next prime is 21601458750203. The reversal of 21601458750154 is 45105785410612.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 21601458750098 and 21601458750107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4611752302 + ... + 4611756985.

It is an arithmetic number, because the mean of its divisors is an integer number (4053732332076).

Almost surely, 2^{21601458750154} is an apocalyptic number.

21601458750154 is a deficient number, since it is larger than the sum of its proper divisors (10828399906454).

21601458750154 is a wasteful number, since it uses less digits than its factorization.

21601458750154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9223510460.

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 21601458750154 in words is "twenty-one trillion, six hundred one billion, four hundred fifty-eight million, seven hundred fifty thousand, one hundred fifty-four".