866470358388381 has 32 divisors (see below), whose sum is σ = 1195338643200000. Its totient is φ = 557631402111168.

The previous prime is 866470358388329. The next prime is 866470358388433. The reversal of 866470358388381 is 183883853074668.

It is an interprime number because it is at equal distance from previous prime (866470358388329) and next prime (866470358388433).

It is not a de Polignac number, because 866470358388381 - 2¹¹ = 866470358386333 is a prime.

It is a super-2 number, since 2×866470358388381² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 866470358388297 and 866470358388306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866470358388301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20076216480 + ... + 20076259638.

It is an arithmetic number, because the mean of its divisors is an integer number (37354332600000).

Almost surely, 2^{866470358388381} is an apocalyptic number.

It is an amenable number.

866470358388381 is a deficient number, since it is larger than the sum of its proper divisors (328868284811619).

866470358388381 is a wasteful number, since it uses less digits than its factorization.

866470358388381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77833.

The product of its (nonzero) digits is 4459069440, while the sum is 78.

The spelling of 866470358388381 in words is "eight hundred sixty-six trillion, four hundred seventy billion, three hundred fifty-eight million, three hundred eighty-eight thousand, three hundred eighty-one".