12699155397 has 8 divisors (see below), whose sum is σ = 17928219456. Its totient is φ = 7968097472.

The previous prime is 12699155387. The next prime is 12699155401. The reversal of 12699155397 is 79355199621.

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

It is not a de Polignac number, because 12699155397 - 2⁶ = 12699155333 is a prime.

It is a super-2 number, since 2×12699155397² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12699155387) 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, 124501473 + ... + 124501574.

It is an arithmetic number, because the mean of its divisors is an integer number (2241027432).

Almost surely, 2^12699155397 is an apocalyptic number.

12699155397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12699155397 is a deficient number, since it is larger than the sum of its proper divisors (5229064059).

12699155397 is a wasteful number, since it uses less digits than its factorization.

12699155397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249003067.

The product of its digits is 4592700, while the sum is 57.

The spelling of 12699155397 in words is "twelve billion, six hundred ninety-nine million, one hundred fifty-five thousand, three hundred ninety-seven".