117651785451643 has 16 divisors (see below), whose sum is σ = 126867499466400. Its totient is φ = 108738548478720.

The previous prime is 117651785451619. The next prime is 117651785451653. The reversal of 117651785451643 is 346154587156711.

It is not a de Polignac number, because 117651785451643 - 2⁹ = 117651785451131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117651785451653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32439493 + ... + 35883481.

It is an arithmetic number, because the mean of its divisors is an integer number (7929218716650).

Almost surely, 2^{117651785451643} is an apocalyptic number.

117651785451643 is a deficient number, since it is larger than the sum of its proper divisors (9215714014757).

117651785451643 is a wasteful number, since it uses less digits than its factorization.

117651785451643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487902.

The product of its digits is 84672000, while the sum is 64.

The spelling of 117651785451643 in words is "one hundred seventeen trillion, six hundred fifty-one billion, seven hundred eighty-five million, four hundred fifty-one thousand, six hundred forty-three".