215612648305542 has 48 divisors (see below), whose sum is σ = 484841771581440. Its totient is φ = 71814689533512.

The previous prime is 215612648305541. The next prime is 215612648305583. The reversal of 215612648305542 is 245503846216512.

215612648305542 is a `hidden beast` number, since 2 + 1 + 5 + 6 + 1 + 2 + 6 + 4 + 83 + 0 + 554 + 2 = 666.

215612648305542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215612648305541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172813678 + ... + 174056865.

It is an arithmetic number, because the mean of its divisors is an integer number (10100870241280).

Almost surely, 2^{215612648305542} is an apocalyptic number.

215612648305542 is an abundant number, since it is smaller than the sum of its proper divisors (269229123275898).

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

215612648305542 is a wasteful number, since it uses less digits than its factorization.

215612648305542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346871839 (or 346871827 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 54.

The spelling of 215612648305542 in words is "two hundred fifteen trillion, six hundred twelve billion, six hundred forty-eight million, three hundred five thousand, five hundred forty-two".