2070278617357 has 4 divisors (see below), whose sum is σ = 2073723341116. Its totient is φ = 2066833893600.

The previous prime is 2070278617289. The next prime is 2070278617373. The reversal of 2070278617357 is 7537168720702.

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 763781610916 + 1306497006441 = 873946^2 + 1143021^2 .

It is a cyclic number.

It is not a de Polignac number, because 2070278617357 - 2⁷ = 2070278617229 is a prime.

It is a super-2 number, since 2×2070278617357² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2070278617298 and 2070278617307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070278617657) 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, 1722360978 + ... + 1722362179.

It is an arithmetic number, because the mean of its divisors is an integer number (518430835279).

Almost surely, 2^{2070278617357} is an apocalyptic number.

It is an amenable number.

2070278617357 is a deficient number, since it is larger than the sum of its proper divisors (3444723759).

2070278617357 is an equidigital number, since it uses as much as digits as its factorization.

2070278617357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444723758.

The product of its (nonzero) digits is 6914880, while the sum is 55.

The spelling of 2070278617357 in words is "two trillion, seventy billion, two hundred seventy-eight million, six hundred seventeen thousand, three hundred fifty-seven".