387668721050 has 24 divisors (see below), whose sum is σ = 776530270236. Its totient is φ = 143139219840.

The previous prime is 387668721049. The next prime is 387668721059. The reversal of 387668721050 is 50127866783.

It can be written as a sum of positive squares in 6 ways, for example, as 145381301521 + 242287419529 = 381289^2 + 492227^2 .

It is a junction number, because it is equal to n+sod(n) for n = 387668720983 and 387668721001.

It is not an unprimeable number, because it can be changed into a prime (387668721059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 298206059 + ... + 298207358.

Almost surely, 2^387668721050 is an apocalyptic number.

387668721050 is an abundant number, since it is smaller than the sum of its proper divisors (388861549186).

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

387668721050 is a wasteful number, since it uses less digits than its factorization.

387668721050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596413442 (or 596413437 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 387668721050 in words is "three hundred eighty-seven billion, six hundred sixty-eight million, seven hundred twenty-one thousand, fifty".