243915355402 has 16 divisors (see below), whose sum is σ = 368652212352. Its totient is φ = 121034787840.

The previous prime is 243915355393. The next prime is 243915355403. The reversal of 243915355402 is 204553519342.

It is not an unprimeable number, because it can be changed into a prime (243915355403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736248 + ... + 1014835.

It is an arithmetic number, because the mean of its divisors is an integer number (23040763272).

Almost surely, 2^243915355402 is an apocalyptic number.

243915355402 is a deficient number, since it is larger than the sum of its proper divisors (124736856950).

243915355402 is a wasteful number, since it uses less digits than its factorization.

243915355402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751613.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 243915355402 in words is "two hundred forty-three billion, nine hundred fifteen million, three hundred fifty-five thousand, four hundred two".