117157061642 has 4 divisors (see below), whose sum is σ = 175735592466. Its totient is φ = 58578530820.

The previous prime is 117157061617. The next prime is 117157061657. The reversal of 117157061642 is 246160751711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99875592961 + 17281468681 = 316031^2 + 131459^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 117157061642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29289265409 + ... + 29289265412.

Almost surely, 2^117157061642 is an apocalyptic number.

117157061642 is a deficient number, since it is larger than the sum of its proper divisors (58578530824).

117157061642 is an equidigital number, since it uses as much as digits as its factorization.

117157061642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58578530823.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 117157061642 in words is "one hundred seventeen billion, one hundred fifty-seven million, sixty-one thousand, six hundred forty-two".