238666516660 has 48 divisors (see below), whose sum is σ = 588822014592. Its totient is φ = 80111836800.

The previous prime is 238666516639. The next prime is 238666516733. The reversal of 238666516660 is 66615666832.

It is a happy number.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41722056 + ... + 41727775.

It is an arithmetic number, because the mean of its divisors is an integer number (12267125304).

Almost surely, 2^238666516660 is an apocalyptic number.

238666516660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238666516660 is an abundant number, since it is smaller than the sum of its proper divisors (350155497932).

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

238666516660 is a wasteful number, since it uses less digits than its factorization.

238666516660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83449864 (or 83449862 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 238666516660 in words is "two hundred thirty-eight billion, six hundred sixty-six million, five hundred sixteen thousand, six hundred sixty".