27779340502446 has 32 divisors (see below), whose sum is σ = 59891724604320. Its totient is φ = 8539018113024.

The previous prime is 27779340502429. The next prime is 27779340502447. The reversal of 27779340502446 is 64420504397772.

It is a self number, because there is not a number n which added to its sum of digits gives 27779340502446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27779340502447) 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, 176405635 + ... + 176563038.

It is an arithmetic number, because the mean of its divisors is an integer number (1871616393885).

Almost surely, 2^{27779340502446} is an apocalyptic number.

27779340502446 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27779340502446 is an abundant number, since it is smaller than the sum of its proper divisors (32112384101874).

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

27779340502446 is a wasteful number, since it uses less digits than its factorization.

27779340502446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352969700.

The product of its (nonzero) digits is 71124480, while the sum is 60.

The spelling of 27779340502446 in words is "twenty-seven trillion, seven hundred seventy-nine billion, three hundred forty million, five hundred two thousand, four hundred forty-six".