117402015155 has 4 divisors (see below), whose sum is σ = 140882418192. Its totient is φ = 93921612120.

The previous prime is 117402015119. The next prime is 117402015173. The reversal of 117402015155 is 551510204711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551510204711 = 631 ⋅874025681.

It is not a de Polignac number, because 117402015155 - 2¹² = 117402011059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11740201511 + ... + 11740201520.

It is an arithmetic number, because the mean of its divisors is an integer number (35220604548).

Almost surely, 2^117402015155 is an apocalyptic number.

117402015155 is a deficient number, since it is larger than the sum of its proper divisors (23480403037).

117402015155 is an equidigital number, since it uses as much as digits as its factorization.

117402015155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23480403036.

The product of its (nonzero) digits is 7000, while the sum is 32.

Adding to 117402015155 its reverse (551510204711), we get a palindrome (668912219866).

The spelling of 117402015155 in words is "one hundred seventeen billion, four hundred two million, fifteen thousand, one hundred fifty-five".