387764514838340 has 12 divisors (see below), whose sum is σ = 814305481160556. Its totient is φ = 155105805935328.

The previous prime is 387764514838291. The next prime is 387764514838391. The reversal of 387764514838340 is 43838415467783.

It can be written as a sum of positive squares in 2 ways, for example, as 287082395572036 + 100682119266304 = 16943506^2 + 10034048^2 .

It is a super-2 number, since 2×387764514838340² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9694112870939 + ... + 9694112870978.

It is an arithmetic number, because the mean of its divisors is an integer number (67858790096713).

Almost surely, 2^{387764514838340} is an apocalyptic number.

It is an amenable number.

387764514838340 is an abundant number, since it is smaller than the sum of its proper divisors (426540966322216).

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

387764514838340 is a wasteful number, since it uses less digits than its factorization.

387764514838340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19388225741926 (or 19388225741924 counting only the distinct ones).

The product of its (nonzero) digits is 1300561920, while the sum is 71.

The spelling of 387764514838340 in words is "three hundred eighty-seven trillion, seven hundred sixty-four billion, five hundred fourteen million, eight hundred thirty-eight thousand, three hundred forty".