3720156122387 has 4 divisors (see below), whose sum is σ = 3747310546776. Its totient is φ = 3693001698000.

The previous prime is 3720156122357. The next prime is 3720156122399. The reversal of 3720156122387 is 7832216510273.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3720156122387 - 2¹⁴ = 3720156106003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720156122357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13577211989 + ... + 13577212262.

It is an arithmetic number, because the mean of its divisors is an integer number (936827636694).

Almost surely, 2^{3720156122387} is an apocalyptic number.

3720156122387 is a deficient number, since it is larger than the sum of its proper divisors (27154424389).

3720156122387 is a wasteful number, since it uses less digits than its factorization.

3720156122387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27154424388.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 3720156122387 in words is "three trillion, seven hundred twenty billion, one hundred fifty-six million, one hundred twenty-two thousand, three hundred eighty-seven".