118511557478 has 8 divisors (see below), whose sum is σ = 177768797472. Its totient is φ = 59255291656.

The previous prime is 118511557459. The next prime is 118511557501. The reversal of 118511557478 is 874755115811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×118511557478² (a number of 23 digits) contains 22 as substring.

It is a congruent 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, 346451 + ... + 597537.

It is an arithmetic number, because the mean of its divisors is an integer number (22221099684).

Almost surely, 2^118511557478 is an apocalyptic number.

118511557478 is a deficient number, since it is larger than the sum of its proper divisors (59257239994).

118511557478 is a wasteful number, since it uses less digits than its factorization.

118511557478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487086.

The product of its digits is 1568000, while the sum is 53.

The spelling of 118511557478 in words is "one hundred eighteen billion, five hundred eleven million, five hundred fifty-seven thousand, four hundred seventy-eight".