7212699953857 has 8 divisors (see below), whose sum is σ = 7445399109632. Its totient is φ = 6980002761600.

The previous prime is 7212699953801. The next prime is 7212699953923. The reversal of 7212699953857 is 7583599962127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7212699953857 is a prime.

It is a super-3 number, since 3×7212699953857³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7212699953857.

It is not an unprimeable number, because it can be changed into a prime (7212699923857) 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, 12105073 + ... + 12686929.

It is an arithmetic number, because the mean of its divisors is an integer number (930674888704).

Almost surely, 2^{7212699953857} is an apocalyptic number.

It is an amenable number.

7212699953857 is a deficient number, since it is larger than the sum of its proper divisors (232699155775).

7212699953857 is a wasteful number, since it uses less digits than its factorization.

7212699953857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981759.

The product of its digits is 514382400, while the sum is 73.

The spelling of 7212699953857 in words is "seven trillion, two hundred twelve billion, six hundred ninety-nine million, nine hundred fifty-three thousand, eight hundred fifty-seven".