243691630000 has 400 divisors, whose sum is σ = 729504933696. Its totient is φ = 76769280000.

The previous prime is 243691629967. The next prime is 243691630019. The reversal of 243691630000 is 36196342.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (400).

It is a super-2 number, since 2×243691630000² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 255709524 + ... + 255710476.

Almost surely, 2^243691630000 is an apocalyptic number.

243691630000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243691630000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364752466848).

243691630000 is an abundant number, since it is smaller than the sum of its proper divisors (485813303696).

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

243691630000 is a wasteful number, since it uses less digits than its factorization.

243691630000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 243691630000 in words is "two hundred forty-three billion, six hundred ninety-one million, six hundred thirty thousand".