2661351343634 has 16 divisors (see below), whose sum is σ = 4010073032448. Its totient is φ = 1324660763472.

The previous prime is 2661351343583. The next prime is 2661351343661. The reversal of 2661351343634 is 4363431531662.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14500589 + ... + 14682975.

It is an arithmetic number, because the mean of its divisors is an integer number (250629564528).

Almost surely, 2^{2661351343634} is an apocalyptic number.

2661351343634 is a deficient number, since it is larger than the sum of its proper divisors (1348721688814).

2661351343634 is a wasteful number, since it uses less digits than its factorization.

2661351343634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215329.

The product of its digits is 2799360, while the sum is 47.

The spelling of 2661351343634 in words is "two trillion, six hundred sixty-one billion, three hundred fifty-one million, three hundred forty-three thousand, six hundred thirty-four".