12020487387 has 16 divisors (see below), whose sum is σ = 16072980000. Its totient is φ = 7990861824.

The previous prime is 12020487377. The next prime is 12020487407. The reversal of 12020487387 is 78378402021.

It is not a de Polignac number, because 12020487387 - 2¹² = 12020483291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12020487317) 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, 1631989 + ... + 1639337.

It is an arithmetic number, because the mean of its divisors is an integer number (1004561250).

Almost surely, 2^12020487387 is an apocalyptic number.

12020487387 is a deficient number, since it is larger than the sum of its proper divisors (4052492613).

12020487387 is an equidigital number, since it uses as much as digits as its factorization.

12020487387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830.

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 12020487387 in words is "twelve billion, twenty million, four hundred eighty-seven thousand, three hundred eighty-seven".