381551755651 has 8 divisors (see below), whose sum is σ = 416298590208. Its totient is φ = 346814973000.

The previous prime is 381551755633. The next prime is 381551755679. The reversal of 381551755651 is 156557155183.

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 381551755651 - 2¹¹ = 381551753603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381551755751) 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, 2433495 + ... + 2585536.

It is an arithmetic number, because the mean of its divisors is an integer number (52037323776).

Almost surely, 2^381551755651 is an apocalyptic number.

381551755651 is a deficient number, since it is larger than the sum of its proper divisors (34746834557).

381551755651 is a wasteful number, since it uses less digits than its factorization.

381551755651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025953.

The product of its digits is 3150000, while the sum is 52.

The spelling of 381551755651 in words is "three hundred eighty-one billion, five hundred fifty-one million, seven hundred fifty-five thousand, six hundred fifty-one".