235256720140 has 24 divisors (see below), whose sum is σ = 532042121520. Its totient is φ = 86864019648.

The previous prime is 235256720137. The next prime is 235256720201. The reversal of 235256720140 is 41027652532.

It is a self number, because there is not a number n which added to its sum of digits gives 235256720140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452416510 + ... + 452417029.

It is an arithmetic number, because the mean of its divisors is an integer number (22168421730).

Almost surely, 2^235256720140 is an apocalyptic number.

235256720140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

235256720140 is an abundant number, since it is smaller than the sum of its proper divisors (296785401380).

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

235256720140 is a wasteful number, since it uses less digits than its factorization.

235256720140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904833561 (or 904833559 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 235256720140 in words is "two hundred thirty-five billion, two hundred fifty-six million, seven hundred twenty thousand, one hundred forty".