27697101553 has 16 divisors (see below), whose sum is σ = 31893474240. Its totient is φ = 23853898080.

The previous prime is 27697101533. The next prime is 27697101557. The reversal of 27697101553 is 35510179672.

It is a happy number.

It is not a de Polignac number, because 27697101553 - 2¹⁷ = 27696970481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27697101557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108100 + ... + 258997.

It is an arithmetic number, because the mean of its divisors is an integer number (1993342140).

Almost surely, 2^27697101553 is an apocalyptic number.

It is an amenable number.

27697101553 is a deficient number, since it is larger than the sum of its proper divisors (4196372687).

27697101553 is an equidigital number, since it uses as much as digits as its factorization.

27697101553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367165 (or 367127 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 27697101553 in words is "twenty-seven billion, six hundred ninety-seven million, one hundred one thousand, five hundred fifty-three".