1597946633620 has 12 divisors (see below), whose sum is σ = 3355687930644. Its totient is φ = 639178653440.

The previous prime is 1597946633567. The next prime is 1597946633623. The reversal of 1597946633620 is 263366497951.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 203006115844 + 1394940517776 = 450562^2 + 1181076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1597946633623) 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, 39948665821 + ... + 39948665860.

It is an arithmetic number, because the mean of its divisors is an integer number (279640660887).

Almost surely, 2^{1597946633620} is an apocalyptic number.

1597946633620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1597946633620 is an abundant number, since it is smaller than the sum of its proper divisors (1757741297024).

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

1597946633620 is a wasteful number, since it uses less digits than its factorization.

1597946633620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79897331690 (or 79897331688 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 61.

The spelling of 1597946633620 in words is "one trillion, five hundred ninety-seven billion, nine hundred forty-six million, six hundred thirty-three thousand, six hundred twenty".