7200012861 has 32 divisors (see below), whose sum is σ = 10925176320. Its totient is φ = 4684280832.

The previous prime is 7200012857. The next prime is 7200012863. The reversal of 7200012861 is 1682100027.

It is not a de Polignac number, because 7200012861 - 2² = 7200012857 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7200012863) 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, 439921 + ... + 455993.

It is an arithmetic number, because the mean of its divisors is an integer number (341411760).

Almost surely, 2^7200012861 is an apocalyptic number.

It is an amenable number.

7200012861 is a deficient number, since it is larger than the sum of its proper divisors (3725163459).

7200012861 is a wasteful number, since it uses less digits than its factorization.

7200012861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16482 (or 16476 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 7200012861 is about 84852.8895265211. The cubic root of 7200012861 is about 1930.9799189475.

Adding to 7200012861 its reverse (1682100027), we get a palindrome (8882112888).

The spelling of 7200012861 in words is "seven billion, two hundred million, twelve thousand, eight hundred sixty-one".