215453533508 has 6 divisors (see below), whose sum is σ = 377043683646. Its totient is φ = 107726766752.

The previous prime is 215453533469. The next prime is 215453533531. The reversal of 215453533508 is 805335354512.

It can be written as a sum of positive squares in only one way, i.e., 207709885504 + 7743648004 = 455752^2 + 87998^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26931691685 + ... + 26931691692.

It is an arithmetic number, because the mean of its divisors is an integer number (62840613941).

Almost surely, 2^215453533508 is an apocalyptic number.

It is an amenable number.

215453533508 is a deficient number, since it is larger than the sum of its proper divisors (161590150138).

215453533508 is a wasteful number, since it uses less digits than its factorization.

215453533508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53863383381 (or 53863383379 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 215453533508 in words is "two hundred fifteen billion, four hundred fifty-three million, five hundred thirty-three thousand, five hundred eight".