78069272131 has 8 divisors (see below), whose sum is σ = 78160819904. Its totient is φ = 77977765800.

The previous prime is 78069272119. The next prime is 78069272147. The reversal of 78069272131 is 13127296087.

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

It is a cyclic number.

It is not a de Polignac number, because 78069272131 - 2¹⁹ = 78068747843 is a prime.

It is a super-2 number, since 2×78069272131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78069272111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5215600 + ... + 5230546.

It is an arithmetic number, because the mean of its divisors is an integer number (9770102488).

Almost surely, 2^78069272131 is an apocalyptic number.

78069272131 is a deficient number, since it is larger than the sum of its proper divisors (91547773).

78069272131 is a wasteful number, since it uses less digits than its factorization.

78069272131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20721.

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 78069272131 in words is "seventy-eight billion, sixty-nine million, two hundred seventy-two thousand, one hundred thirty-one".