381611405045 has 16 divisors (see below), whose sum is σ = 505187634672. Its totient is φ = 274932042240.

The previous prime is 381611405041. The next prime is 381611405047. The reversal of 381611405045 is 540504116183.

It can be written as a sum of positive squares in 8 ways, for example, as 12581884561 + 369029520484 = 112169^2 + 607478^2 .

It is not a de Polignac number, because 381611405045 - 2² = 381611405041 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 (381611405041) 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, 71594222 + ... + 71599551.

It is an arithmetic number, because the mean of its divisors is an integer number (31574227167).

Almost surely, 2^381611405045 is an apocalyptic number.

It is an amenable number.

381611405045 is a deficient number, since it is larger than the sum of its proper divisors (123576229627).

381611405045 is a wasteful number, since it uses less digits than its factorization.

381611405045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143193832.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 381611405045 in words is "three hundred eighty-one billion, six hundred eleven million, four hundred five thousand, forty-five".