27740477458 has 8 divisors (see below), whose sum is σ = 42735330252. Its totient is φ = 13495367376.

The previous prime is 27740477431. The next prime is 27740477473. The reversal of 27740477458 is 85477404772.

It can be written as a sum of positive squares in 2 ways, for example, as 27235891089 + 504586369 = 165033^2 + 22463^2 .

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

It is a super-2 number, since 2×27740477458² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27740477399 and 27740477408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187435585 + ... + 187435732.

Almost surely, 2^27740477458 is an apocalyptic number.

27740477458 is a deficient number, since it is larger than the sum of its proper divisors (14994852794).

27740477458 is a wasteful number, since it uses less digits than its factorization.

27740477458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374871356.

The product of its (nonzero) digits is 12293120, while the sum is 55.

The spelling of 27740477458 in words is "twenty-seven billion, seven hundred forty million, four hundred seventy-seven thousand, four hundred fifty-eight".