2646958473656 has 64 divisors (see below), whose sum is σ = 5744458982400. Its totient is φ = 1119932790912.

The previous prime is 2646958473547. The next prime is 2646958473661. The reversal of 2646958473656 is 6563748596462.

It is a super-2 number, since 2×2646958473656² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2646958473656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51235070 + ... + 51286706.

It is an arithmetic number, because the mean of its divisors is an integer number (89757171600).

Almost surely, 2^{2646958473656} is an apocalyptic number.

It is an amenable number.

2646958473656 is an abundant number, since it is smaller than the sum of its proper divisors (3097500508744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2646958473656 is a wasteful number, since it uses less digits than its factorization.

2646958473656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63316 (or 63312 counting only the distinct ones).

The product of its digits is 1567641600, while the sum is 71.

The spelling of 2646958473656 in words is "two trillion, six hundred forty-six billion, nine hundred fifty-eight million, four hundred seventy-three thousand, six hundred fifty-six".