21357017436152 has 8 divisors (see below), whose sum is σ = 40044407692800. Its totient is φ = 10678508718072.

The previous prime is 21357017436127. The next prime is 21357017436163. The reversal of 21357017436152 is 25163471075312.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21357017436152² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21357017436097 and 21357017436106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334813589752 + ... + 1334813589767.

It is an arithmetic number, because the mean of its divisors is an integer number (5005550961600).

Almost surely, 2^{21357017436152} is an apocalyptic number.

It is an amenable number.

21357017436152 is a deficient number, since it is larger than the sum of its proper divisors (18687390256648).

21357017436152 is a wasteful number, since it uses less digits than its factorization.

21357017436152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669627179525 (or 2669627179521 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 21357017436152 in words is "twenty-one trillion, three hundred fifty-seven billion, seventeen million, four hundred thirty-six thousand, one hundred fifty-two".