118437747761 has 4 divisors (see below), whose sum is σ = 121192114032. Its totient is φ = 115683381492.

The previous prime is 118437747751. The next prime is 118437747767. The reversal of 118437747761 is 167747734811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 167747734811 = 189691 ⋅884321.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118437747761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118437747697 and 118437747706.

It is not an unprimeable number, because it can be changed into a prime (118437747767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377183071 + ... + 1377183156.

It is an arithmetic number, because the mean of its divisors is an integer number (30298028508).

Almost surely, 2^118437747761 is an apocalyptic number.

It is an amenable number.

118437747761 is a deficient number, since it is larger than the sum of its proper divisors (2754366271).

118437747761 is an equidigital number, since it uses as much as digits as its factorization.

118437747761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2754366270.

The product of its digits is 5531904, while the sum is 56.

The spelling of 118437747761 in words is "one hundred eighteen billion, four hundred thirty-seven million, seven hundred forty-seven thousand, seven hundred sixty-one".