146731688640 has 84 divisors (see below), whose sum is σ = 504695880624. Its totient is φ = 39128449536.

The previous prime is 146731688639. The next prime is 146731688699. The reversal of 146731688640 is 46886137641.

146731688640 is a `hidden beast` number, since 1 + 467 + 3 + 1 + 68 + 86 + 40 = 666.

It is a super-2 number, since 2×146731688640² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25471372 + ... + 25477131.

Almost surely, 2^146731688640 is an apocalyptic number.

146731688640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146731688640 is an abundant number, since it is smaller than the sum of its proper divisors (357964191984).

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

146731688640 is a wasteful number, since it uses less digits than its factorization.

146731688640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50948526 (or 50948513 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 146731688640 in words is "one hundred forty-six billion, seven hundred thirty-one million, six hundred eighty-eight thousand, six hundred forty".