12019937461 has 4 divisors (see below), whose sum is σ = 13737071392. Its totient is φ = 10302803532.

The previous prime is 12019937443. The next prime is 12019937473. The reversal of 12019937461 is 16473991021.

12019937461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12019937461 - 2⁹ = 12019936949 is a prime.

It is a super-2 number, since 2×12019937461² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12019937161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858566955 + ... + 858566968.

It is an arithmetic number, because the mean of its divisors is an integer number (3434267848).

Almost surely, 2^12019937461 is an apocalyptic number.

It is an amenable number.

12019937461 is a deficient number, since it is larger than the sum of its proper divisors (1717133931).

12019937461 is an equidigital number, since it uses as much as digits as its factorization.

12019937461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717133930.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 12019937461 in words is "twelve billion, nineteen million, nine hundred thirty-seven thousand, four hundred sixty-one".