381720252707 has 16 divisors (see below), whose sum is σ = 394149888000. Its totient is φ = 369491557344.

The previous prime is 381720252607. The next prime is 381720252731. The reversal of 381720252707 is 707252027183.

It is a cyclic number.

It is not a de Polignac number, because 381720252707 - 2¹⁸ = 381719990563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381720252737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5488094 + ... + 5557212.

It is an arithmetic number, because the mean of its divisors is an integer number (24634368000).

Almost surely, 2^381720252707 is an apocalyptic number.

381720252707 is a deficient number, since it is larger than the sum of its proper divisors (12429635293).

381720252707 is a wasteful number, since it uses less digits than its factorization.

381720252707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70570.

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 381720252707 in words is "three hundred eighty-one billion, seven hundred twenty million, two hundred fifty-two thousand, seven hundred seven".