660402351012030 has 128 divisors (see below), whose sum is σ = 1753700666757120. Its totient is φ = 157817794268160.

The previous prime is 660402351012029. The next prime is 660402351012031. The reversal of 660402351012030 is 30210153204066.

It is an interprime number because it is at equal distance from previous prime (660402351012029) and next prime (660402351012031).

It is a super-2 number, since 2×660402351012030² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 660402351011982 and 660402351012000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660402351012031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36397156 + ... + 51434984.

It is an arithmetic number, because the mean of its divisors is an integer number (13700786459040).

Almost surely, 2^{660402351012030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 660402351012030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876850333378560).

660402351012030 is an abundant number, since it is smaller than the sum of its proper divisors (1093298315745090).

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

660402351012030 is a wasteful number, since it uses less digits than its factorization.

660402351012030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15039746.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 660402351012030 in words is "six hundred sixty trillion, four hundred two billion, three hundred fifty-one million, twelve thousand, thirty".