78379025542 has 8 divisors (see below), whose sum is σ = 117711394416. Its totient is φ = 39141894072.

The previous prime is 78379025507. The next prime is 78379025581. The reversal of 78379025542 is 24552097387.

It is a happy number.

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

It is a super-2 number, since 2×78379025542² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78379025542.

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, 23807293 + ... + 23810584.

It is an arithmetic number, because the mean of its divisors is an integer number (14713924302).

Almost surely, 2^78379025542 is an apocalyptic number.

78379025542 is a deficient number, since it is larger than the sum of its proper divisors (39332368874).

78379025542 is a wasteful number, since it uses less digits than its factorization.

78379025542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47618702.

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 78379025542 in words is "seventy-eight billion, three hundred seventy-nine million, twenty-five thousand, five hundred forty-two".