234478723464 has 48 divisors (see below), whose sum is σ = 636418224000. Its totient is φ = 77990752224.

The previous prime is 234478723429. The next prime is 234478723559. The reversal of 234478723464 is 464327874432.

234478723464 is a `hidden beast` number, since 2 + 3 + 44 + 78 + 72 + 3 + 464 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 234478723464.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3483564 + ... + 3550235.

It is an arithmetic number, because the mean of its divisors is an integer number (13258713000).

Almost surely, 2^234478723464 is an apocalyptic number.

234478723464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

234478723464 is an abundant number, since it is smaller than the sum of its proper divisors (401939500536).

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

234478723464 is a wasteful number, since it uses less digits than its factorization.

234478723464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7034274 (or 7034267 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 54.

The spelling of 234478723464 in words is "two hundred thirty-four billion, four hundred seventy-eight million, seven hundred twenty-three thousand, four hundred sixty-four".