1612631247979 has 4 divisors (see below), whose sum is σ = 1697506576840. Its totient is φ = 1527755919120.

The previous prime is 1612631247977. The next prime is 1612631248031. The reversal of 1612631247979 is 9797421362161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1612631247979 - 2¹ = 1612631247977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612631247977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42437664402 + ... + 42437664439.

It is an arithmetic number, because the mean of its divisors is an integer number (424376644210).

Almost surely, 2^{1612631247979} is an apocalyptic number.

1612631247979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1612631247979 is a deficient number, since it is larger than the sum of its proper divisors (84875328861).

1612631247979 is an equidigital number, since it uses as much as digits as its factorization.

1612631247979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84875328860.

The product of its digits is 6858432, while the sum is 58.

The spelling of 1612631247979 in words is "one trillion, six hundred twelve billion, six hundred thirty-one million, two hundred forty-seven thousand, nine hundred seventy-nine".