27390253480 has 16 divisors (see below), whose sum is σ = 61628070420. Its totient is φ = 10956101376.

The previous prime is 27390253463. The next prime is 27390253519. The reversal of 27390253480 is 8435209372.

It can be written as a sum of positive squares in 2 ways, for example, as 25934525764 + 1455727716 = 161042^2 + 38154^2 .

It is a super-2 number, since 2×27390253480² (a number of 22 digits) contains 22 as substring.

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, 342378129 + ... + 342378208.

Almost surely, 2^27390253480 is an apocalyptic number.

27390253480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27390253480 is an abundant number, since it is smaller than the sum of its proper divisors (34237816940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27390253480 is a wasteful number, since it uses less digits than its factorization.

27390253480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684756348 (or 684756344 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 27390253480 in words is "twenty-seven billion, three hundred ninety million, two hundred fifty-three thousand, four hundred eighty".