387668721001 has 8 divisors (see below), whose sum is σ = 393451962624. Its totient is φ = 381894455040.

The previous prime is 387668720981. The next prime is 387668721031. The reversal of 387668721001 is 100127866783.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 387668721001 - 2¹⁵ = 387668688233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387668721031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2156865 + ... + 2329678.

It is an arithmetic number, because the mean of its divisors is an integer number (49181495328).

Almost surely, 2^387668721001 is an apocalyptic number.

It is an amenable number.

387668721001 is a deficient number, since it is larger than the sum of its proper divisors (5783241623).

387668721001 is a wasteful number, since it uses less digits than its factorization.

387668721001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487831.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 387668721001 in words is "three hundred eighty-seven billion, six hundred sixty-eight million, seven hundred twenty-one thousand, one".