2978204645573 has 4 divisors (see below), whose sum is σ = 2978219882688. Its totient is φ = 2978189408460.

The previous prime is 2978204645561. The next prime is 2978204645587. The reversal of 2978204645573 is 3755464028792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2978204645573 - 2⁴ = 2978204645557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978204645173) 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, 7321511 + ... + 7717572.

It is an arithmetic number, because the mean of its divisors is an integer number (744554970672).

Almost surely, 2^{2978204645573} is an apocalyptic number.

It is an amenable number.

2978204645573 is a deficient number, since it is larger than the sum of its proper divisors (15237115).

2978204645573 is a wasteful number, since it uses less digits than its factorization.

2978204645573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15237114.

The product of its (nonzero) digits is 101606400, while the sum is 62.

The spelling of 2978204645573 in words is "two trillion, nine hundred seventy-eight billion, two hundred four million, six hundred forty-five thousand, five hundred seventy-three".