15506222462381 has 16 divisors (see below), whose sum is σ = 18332619891840. Its totient is φ = 12832637737920.

The previous prime is 15506222462317. The next prime is 15506222462407. The reversal of 15506222462381 is 18326422260551.

It is not a de Polignac number, because 15506222462381 - 2⁶ = 15506222462317 is a prime.

It is a super-2 number, since 2×15506222462381² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15506222462681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39978875 + ... + 40364871.

It is an arithmetic number, because the mean of its divisors is an integer number (1145788743240).

Almost surely, 2^{15506222462381} is an apocalyptic number.

It is an amenable number.

15506222462381 is a deficient number, since it is larger than the sum of its proper divisors (2826397429459).

15506222462381 is a wasteful number, since it uses less digits than its factorization.

15506222462381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583924.

The product of its (nonzero) digits is 1382400, while the sum is 47.

The spelling of 15506222462381 in words is "fifteen trillion, five hundred six billion, two hundred twenty-two million, four hundred sixty-two thousand, three hundred eighty-one".