78152031551418 has 64 divisors (see below), whose sum is σ = 181035676366848. Its totient is φ = 22228615422720.

The previous prime is 78152031551393. The next prime is 78152031551423. The reversal of 78152031551418 is 81415513025187.

It is a super-2 number, since 2×78152031551418² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94484980 + ... + 95308527.

It is an arithmetic number, because the mean of its divisors is an integer number (2828682443232).

Almost surely, 2^{78152031551418} is an apocalyptic number.

78152031551418 is an abundant number, since it is smaller than the sum of its proper divisors (102883644815430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78152031551418 is a wasteful number, since it uses less digits than its factorization.

78152031551418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189793907.

The product of its (nonzero) digits is 1344000, while the sum is 51.

The spelling of 78152031551418 in words is "seventy-eight trillion, one hundred fifty-two billion, thirty-one million, five hundred fifty-one thousand, four hundred eighteen".