213003120078 has 24 divisors (see below), whose sum is σ = 527436297648. Its totient is φ = 60858034272.

The previous prime is 213003119869. The next prime is 213003120079. The reversal of 213003120078 is 870021300312.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213003120079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 845250351 + ... + 845250602.

It is an arithmetic number, because the mean of its divisors is an integer number (21976512402).

Almost surely, 2^213003120078 is an apocalyptic number.

213003120078 is an abundant number, since it is smaller than the sum of its proper divisors (314433177570).

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

213003120078 is a wasteful number, since it uses less digits than its factorization.

213003120078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690500968 (or 1690500965 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 213003120078 in words is "two hundred thirteen billion, three million, one hundred twenty thousand, seventy-eight".