2660677240654 has 4 divisors (see below), whose sum is σ = 3991015860984. Its totient is φ = 1330338620326.

The previous prime is 2660677240649. The next prime is 2660677240667. The reversal of 2660677240654 is 4560427760662.

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 = 2660677240595 and 2660677240604.

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, 665169310162 + ... + 665169310165.

It is an arithmetic number, because the mean of its divisors is an integer number (997753965246).

Almost surely, 2^{2660677240654} is an apocalyptic number.

2660677240654 is a deficient number, since it is larger than the sum of its proper divisors (1330338620330).

2660677240654 is a wasteful number, since it uses less digits than its factorization.

2660677240654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330338620329.

The product of its (nonzero) digits is 20321280, while the sum is 55.

The spelling of 2660677240654 in words is "two trillion, six hundred sixty billion, six hundred seventy-seven million, two hundred forty thousand, six hundred fifty-four".