2129542670293 has 4 divisors (see below), whose sum is σ = 2129691676588. Its totient is φ = 2129393664000.

The previous prime is 2129542670291. The next prime is 2129542670369. The reversal of 2129542670293 is 3920762459212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1054468158129 + 1075074512164 = 1026873^2 + 1036858^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129542670293 - 2¹ = 2129542670291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2129542670293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129542670291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74481708 + ... + 74510293.

It is an arithmetic number, because the mean of its divisors is an integer number (532422919147).

Almost surely, 2^{2129542670293} is an apocalyptic number.

It is an amenable number.

2129542670293 is a deficient number, since it is larger than the sum of its proper divisors (149006295).

2129542670293 is a wasteful number, since it uses less digits than its factorization.

2129542670293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149006294.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 2129542670293 in words is "two trillion, one hundred twenty-nine billion, five hundred forty-two million, six hundred seventy thousand, two hundred ninety-three".