1621030073124 has 48 divisors (see below), whose sum is σ = 4715723851776. Its totient is φ = 421046772000.

The previous prime is 1621030073107. The next prime is 1621030073161. The reversal of 1621030073124 is 4213700301261.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1621030073091 and 1621030073100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 877179852 + ... + 877181699.

It is an arithmetic number, because the mean of its divisors is an integer number (98244246912).

Almost surely, 2^{1621030073124} is an apocalyptic number.

1621030073124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1621030073124 is an abundant number, since it is smaller than the sum of its proper divisors (3094693778652).

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

1621030073124 is a wasteful number, since it uses less digits than its factorization.

1621030073124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754361576 (or 1754361574 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

Adding to 1621030073124 its reverse (4213700301261), we get a palindrome (5834730374385).

The spelling of 1621030073124 in words is "one trillion, six hundred twenty-one billion, thirty million, seventy-three thousand, one hundred twenty-four".