2061144615646 has 4 divisors (see below), whose sum is σ = 3091716923472. Its totient is φ = 1030572307822.

The previous prime is 2061144615617. The next prime is 2061144615683. The reversal of 2061144615646 is 6465164411602.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2061144615596 and 2061144615605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515286153910 + ... + 515286153913.

It is an arithmetic number, because the mean of its divisors is an integer number (772929230868).

Almost surely, 2^{2061144615646} is an apocalyptic number.

2061144615646 is a deficient number, since it is larger than the sum of its proper divisors (1030572307826).

2061144615646 is a wasteful number, since it uses less digits than its factorization.

2061144615646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030572307825.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 2061144615646 in words is "two trillion, sixty-one billion, one hundred forty-four million, six hundred fifteen thousand, six hundred forty-six".