243401697870 has 16 divisors (see below), whose sum is σ = 584164074960. Its totient is φ = 64907119424.

The previous prime is 243401697823. The next prime is 243401697871. The reversal of 243401697870 is 78796104342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243401697871) 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, 4056694935 + ... + 4056694994.

It is an arithmetic number, because the mean of its divisors is an integer number (36510254685).

Almost surely, 2^243401697870 is an apocalyptic number.

243401697870 is an abundant number, since it is smaller than the sum of its proper divisors (340762377090).

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

243401697870 is a wasteful number, since it uses less digits than its factorization.

243401697870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8113389939.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 243401697870 in words is "two hundred forty-three billion, four hundred one million, six hundred ninety-seven thousand, eight hundred seventy".