117826772738 has 4 divisors (see below), whose sum is σ = 176740159110. Its totient is φ = 58913386368.

The previous prime is 117826772737. The next prime is 117826772741. The reversal of 117826772738 is 837277628711.

It is a happy number.

117826772738 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837277628711 = 211657 ⋅3955823.

It can be written as a sum of positive squares in only one way, i.e., 98817808609 + 19008964129 = 314353^2 + 137873^2 .

It is not an unprimeable number, because it can be changed into a prime (117826772737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29456693183 + ... + 29456693186.

Almost surely, 2^117826772738 is an apocalyptic number.

117826772738 is a deficient number, since it is larger than the sum of its proper divisors (58913386372).

117826772738 is an equidigital number, since it uses as much as digits as its factorization.

117826772738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58913386371.

The product of its digits is 11063808, while the sum is 59.

The spelling of 117826772738 in words is "one hundred seventeen billion, eight hundred twenty-six million, seven hundred seventy-two thousand, seven hundred thirty-eight".