12016777388820 has 24 divisors (see below), whose sum is σ = 33646976688864. Its totient is φ = 3204473970336.

The previous prime is 12016777388809. The next prime is 12016777388831. The reversal of 12016777388820 is 2888377761021.

It is an interprime number because it is at equal distance from previous prime (12016777388809) and next prime (12016777388831).

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 200279623147 = 12016777388820 / (1 + 2 + 0 + 1 + 6 + 7 + 7 + 7 + 3 + 8 + 8 + 8 + 2 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100139811514 + ... + 100139811633.

It is an arithmetic number, because the mean of its divisors is an integer number (1401957362036).

Almost surely, 2^{12016777388820} is an apocalyptic number.

12016777388820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12016777388820 is an abundant number, since it is smaller than the sum of its proper divisors (21630199300044).

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

12016777388820 is a wasteful number, since it uses less digits than its factorization.

12016777388820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200279623159 (or 200279623157 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 60.

The spelling of 12016777388820 in words is "twelve trillion, sixteen billion, seven hundred seventy-seven million, three hundred eighty-eight thousand, eight hundred twenty".