27801038355 has 64 divisors (see below), whose sum is σ = 49747046400. Its totient is φ = 13195768320.

The previous prime is 27801038351. The next prime is 27801038401. The reversal of 27801038355 is 55383010872.

It is not a de Polignac number, because 27801038355 - 2² = 27801038351 is a prime.

It is a super-2 number, since 2×27801038355² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27801038351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 260350 + ... + 351260.

It is an arithmetic number, because the mean of its divisors is an integer number (777297600).

Almost surely, 2^27801038355 is an apocalyptic number.

27801038355 is a deficient number, since it is larger than the sum of its proper divisors (21946008045).

27801038355 is a wasteful number, since it uses less digits than its factorization.

27801038355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91004.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 27801038355 in words is "twenty-seven billion, eight hundred one million, thirty-eight thousand, three hundred fifty-five".