1621462316137 has 4 divisors (see below), whose sum is σ = 1621522667520. Its totient is φ = 1621401964756.

The previous prime is 1621462316113. The next prime is 1621462316153. The reversal of 1621462316137 is 7316132641261.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1621462316137 - 2¹¹ = 1621462314089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1621462316093 and 1621462316102.

It is not an unprimeable number, because it can be changed into a prime (1621462316107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30135373 + ... + 30189130.

It is an arithmetic number, because the mean of its divisors is an integer number (405380666880).

Almost surely, 2^{1621462316137} is an apocalyptic number.

It is an amenable number.

1621462316137 is a deficient number, since it is larger than the sum of its proper divisors (60351383).

1621462316137 is an equidigital number, since it uses as much as digits as its factorization.

1621462316137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60351382.

The product of its digits is 217728, while the sum is 43.

Adding to 1621462316137 its reverse (7316132641261), we get a palindrome (8937594957398).

The spelling of 1621462316137 in words is "one trillion, six hundred twenty-one billion, four hundred sixty-two million, three hundred sixteen thousand, one hundred thirty-seven".