78213260588155 has 48 divisors (see below), whose sum is σ = 121123444711680. Its totient is φ = 47929939915200.

The previous prime is 78213260588137. The next prime is 78213260588179. The reversal of 78213260588155 is 55188506231287.

It is not a de Polignac number, because 78213260588155 - 2⁵ = 78213260588123 is a prime.

It is a super-2 number, since 2×78213260588155² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78213260588093 and 78213260588102.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245786911 + ... + 246104920.

It is an arithmetic number, because the mean of its divisors is an integer number (2523405098160).

Almost surely, 2^{78213260588155} is an apocalyptic number.

78213260588155 is a deficient number, since it is larger than the sum of its proper divisors (42910184123525).

78213260588155 is a wasteful number, since it uses less digits than its factorization.

78213260588155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491891920 (or 491891913 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 61.

The spelling of 78213260588155 in words is "seventy-eight trillion, two hundred thirteen billion, two hundred sixty million, five hundred eighty-eight thousand, one hundred fifty-five".