27978002553 has 8 divisors (see below), whose sum is σ = 37423953216. Its totient is φ = 18592026800.

The previous prime is 27978002537. The next prime is 27978002593. The reversal of 27978002553 is 35520087972.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27978002553 - 2⁴ = 27978002537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27978002593) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14992638 + ... + 14994503.

It is an arithmetic number, because the mean of its divisors is an integer number (4677994152).

Almost surely, 2^27978002553 is an apocalyptic number.

It is an amenable number.

27978002553 is a deficient number, since it is larger than the sum of its proper divisors (9445950663).

27978002553 is a wasteful number, since it uses less digits than its factorization.

27978002553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29987455.

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 27978002553 in words is "twenty-seven billion, nine hundred seventy-eight million, two thousand, five hundred fifty-three".