212592640140 has 72 divisors (see below), whose sum is σ = 682797548160. Its totient is φ = 53356583424.

The previous prime is 212592640079. The next prime is 212592640163. The reversal of 212592640140 is 41046295212.

It is a happy number.

212592640140 is a `hidden beast` number, since 2 + 1 + 2 + 5 + 9 + 2 + 640 + 1 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 212592640095 and 212592640104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34734300 + ... + 34740419.

It is an arithmetic number, because the mean of its divisors is an integer number (9483299280).

Almost surely, 2^212592640140 is an apocalyptic number.

212592640140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212592640140 is an abundant number, since it is smaller than the sum of its proper divisors (470204908020).

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

212592640140 is a wasteful number, since it uses less digits than its factorization.

212592640140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69474751 (or 69474746 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 212592640140 in words is "two hundred twelve billion, five hundred ninety-two million, six hundred forty thousand, one hundred forty".