12777501390 has 32 divisors (see below), whose sum is σ = 30677839776. Its totient is φ = 3406018560.

The previous prime is 12777501389. The next prime is 12777501391. The reversal of 12777501390 is 9310577721.

It is an interprime number because it is at equal distance from previous prime (12777501389) and next prime (12777501391).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12777501391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1891 + ... + 159870.

It is an arithmetic number, because the mean of its divisors is an integer number (958682493).

Almost surely, 2^12777501390 is an apocalyptic number.

12777501390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12777501390 is an abundant number, since it is smaller than the sum of its proper divisors (17900338386).

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

12777501390 is a wasteful number, since it uses less digits than its factorization.

12777501390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164404.

The product of its (nonzero) digits is 92610, while the sum is 42.

The spelling of 12777501390 in words is "twelve billion, seven hundred seventy-seven million, five hundred one thousand, three hundred ninety".