186130640640 has 288 divisors, whose sum is σ = 692200567296. Its totient is φ = 41741107200.

The previous prime is 186130640629. The next prime is 186130640651. The reversal of 186130640640 is 46046031681.

It is an interprime number because it is at equal distance from previous prime (186130640629) and next prime (186130640651).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1359315 + ... + 1489965.

It is an arithmetic number, because the mean of its divisors is an integer number (2403474192).

Almost surely, 2^186130640640 is an apocalyptic number.

186130640640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 186130640640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346100283648).

186130640640 is an abundant number, since it is smaller than the sum of its proper divisors (506069926656).

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

186130640640 is a wasteful number, since it uses less digits than its factorization.

186130640640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130735 (or 130721 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 186130640640 in words is "one hundred eighty-six billion, one hundred thirty million, six hundred forty thousand, six hundred forty".