28070361377 has 4 divisors (see below), whose sum is σ = 28075277076. Its totient is φ = 28065445680.

The previous prime is 28070361367. The next prime is 28070361409. The reversal of 28070361377 is 77316307082.

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 10285205056 + 17785156321 = 101416^2 + 133361^2 .

It is a cyclic number.

It is not a de Polignac number, because 28070361377 - 2¹² = 28070357281 is a prime.

It is a super-2 number, since 2×28070361377² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28070361307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2449274 + ... + 2460707.

It is an arithmetic number, because the mean of its divisors is an integer number (7018819269).

Almost surely, 2^28070361377 is an apocalyptic number.

It is an amenable number.

28070361377 is a deficient number, since it is larger than the sum of its proper divisors (4915699).

28070361377 is an equidigital number, since it uses as much as digits as its factorization.

28070361377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4915698.

The product of its (nonzero) digits is 296352, while the sum is 44.

The spelling of 28070361377 in words is "twenty-eight billion, seventy million, three hundred sixty-one thousand, three hundred seventy-seven".