320557493100 has 108 divisors (see below), whose sum is σ = 1004312475096. Its totient is φ = 78906447360.

The previous prime is 320557493089. The next prime is 320557493101. The reversal of 320557493100 is 1394755023.

It is a happy number.

It is a super-2 number, since 2×320557493100² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (320557493101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3110617 + ... + 3212016.

Almost surely, 2^320557493100 is an apocalyptic number.

320557493100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320557493100 is an abundant number, since it is smaller than the sum of its proper divisors (683754981996).

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

320557493100 is a wasteful number, since it uses less digits than its factorization.

320557493100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6322676 (or 6322656 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 39.

The spelling of 320557493100 in words is "three hundred twenty billion, five hundred fifty-seven million, four hundred ninety-three thousand, one hundred".