402345671481 has 48 divisors (see below), whose sum is σ = 629742112272. Its totient is φ = 246069964800.

The previous prime is 402345671471. The next prime is 402345671489. The reversal of 402345671481 is 184176543204.

402345671481 is a `hidden beast` number, since 4 + 0 + 2 + 3 + 4 + 567 + 1 + 4 + 81 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 27423360000 + 374922311481 = 165600^2 + 612309^2 .

It is not a de Polignac number, because 402345671481 - 2¹⁰ = 402345670457 is a prime.

It is a super-2 number, since 2×402345671481² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (402345671489) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14734561 + ... + 14761841.

It is an arithmetic number, because the mean of its divisors is an integer number (13119627339).

Almost surely, 2^402345671481 is an apocalyptic number.

It is an amenable number.

402345671481 is a deficient number, since it is larger than the sum of its proper divisors (227396440791).

402345671481 is a wasteful number, since it uses less digits than its factorization.

402345671481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28074 (or 28071 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 402345671481 in words is "four hundred two billion, three hundred forty-five million, six hundred seventy-one thousand, four hundred eighty-one".