405012102155102 has 16 divisors (see below), whose sum is σ = 655551015346080. Its totient is φ = 186557034967392.

The previous prime is 405012102155069. The next prime is 405012102155107. The reversal of 405012102155102 is 201551201210504.

It is a super-3 number, since 3×405012102155102³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405012102155107) 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, 15484468577 + ... + 15484494732.

It is an arithmetic number, because the mean of its divisors is an integer number (40971938459130).

Almost surely, 2^{405012102155102} is an apocalyptic number.

405012102155102 is a deficient number, since it is larger than the sum of its proper divisors (250538913190978).

405012102155102 is a wasteful number, since it uses less digits than its factorization.

405012102155102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30968963827.

The product of its (nonzero) digits is 4000, while the sum is 29.

Adding to 405012102155102 its reverse (201551201210504), we get a palindrome (606563303365606).

The spelling of 405012102155102 in words is "four hundred five trillion, twelve billion, one hundred two million, one hundred fifty-five thousand, one hundred two".