20120426330646 has 96 divisors (see below), whose sum is σ = 44629871150304. Its totient is φ = 6024985804800.

The previous prime is 20120426330611. The next prime is 20120426330659. The reversal of 20120426330646 is 64603362402102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5749686 + ... + 8561526.

It is an arithmetic number, because the mean of its divisors is an integer number (464894491149).

Almost surely, 2^{20120426330646} is an apocalyptic number.

20120426330646 is an abundant number, since it is smaller than the sum of its proper divisors (24509444819658).

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

20120426330646 is a wasteful number, since it uses less digits than its factorization.

20120426330646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811998 (or 2811967 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 39.

Adding to 20120426330646 its reverse (64603362402102), we get a palindrome (84723788732748).

The spelling of 20120426330646 in words is "twenty trillion, one hundred twenty billion, four hundred twenty-six million, three hundred thirty thousand, six hundred forty-six".