2156655612207 has 8 divisors (see below), whose sum is σ = 2877111299200. Its totient is φ = 1436985166680.

The previous prime is 2156655612193. The next prime is 2156655612217. The reversal of 2156655612207 is 7022165566512.

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

It is not a de Polignac number, because 2156655612207 - 2⁶ = 2156655612143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156655612217) 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, 196303957 + ... + 196314942.

It is an arithmetic number, because the mean of its divisors is an integer number (359638912400).

Almost surely, 2^{2156655612207} is an apocalyptic number.

2156655612207 is a deficient number, since it is larger than the sum of its proper divisors (720455686993).

2156655612207 is a wasteful number, since it uses less digits than its factorization.

2156655612207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392620733.

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 2156655612207 in words is "two trillion, one hundred fifty-six billion, six hundred fifty-five million, six hundred twelve thousand, two hundred seven".