21860675001 has 24 divisors (see below), whose sum is σ = 34932306240. Its totient is φ = 13062285600.

The previous prime is 21860674993. The next prime is 21860675009. The reversal of 21860675001 is 10057606812.

It is an interprime number because it is at equal distance from previous prime (21860674993) and next prime (21860675009).

It is not a de Polignac number, because 21860675001 - 2³ = 21860674993 is a prime.

It is a super-2 number, since 2×21860675001² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (21860675009) 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 23 ways as a sum of consecutive naturals, for example, 1548006 + ... + 1562063.

It is an arithmetic number, because the mean of its divisors is an integer number (1455512760).

Almost surely, 2^21860675001 is an apocalyptic number.

It is an amenable number.

21860675001 is a deficient number, since it is larger than the sum of its proper divisors (13071631239).

21860675001 is a wasteful number, since it uses less digits than its factorization.

21860675001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110157 (or 3110154 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 21860675001 in words is "twenty-one billion, eight hundred sixty million, six hundred seventy-five thousand, one".