387040649951 has 4 divisors (see below), whose sum is σ = 387044943600. Its totient is φ = 387036356304.

The previous prime is 387040649929. The next prime is 387040649993. The reversal of 387040649951 is 159946040783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 159946040783 = 2851 ⋅56101733.

It is a cyclic number.

It is not a de Polignac number, because 387040649951 - 2³⁰ = 385966908127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387040649551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2008646 + ... + 2192883.

It is an arithmetic number, because the mean of its divisors is an integer number (96761235900).

Almost surely, 2^387040649951 is an apocalyptic number.

387040649951 is a deficient number, since it is larger than the sum of its proper divisors (4293649).

387040649951 is an equidigital number, since it uses as much as digits as its factorization.

387040649951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293648.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 387040649951 in words is "three hundred eighty-seven billion, forty million, six hundred forty-nine thousand, nine hundred fifty-one".