78529037461 has 16 divisors (see below), whose sum is σ = 90550715904. Its totient is φ = 66709782144.

The previous prime is 78529037459. The next prime is 78529037507. The reversal of 78529037461 is 16473092587.

It is a cyclic number.

It is not a de Polignac number, because 78529037461 - 2¹ = 78529037459 is a prime.

It is a super-2 number, since 2×78529037461² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78529037399 and 78529037408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78529034461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521076 + ... + 654658.

It is an arithmetic number, because the mean of its divisors is an integer number (5659419744).

It is a 1-persistent number, because it is pandigital, but 2⋅78529037461 = 157058074922 is not.

Almost surely, 2^78529037461 is an apocalyptic number.

It is an amenable number.

78529037461 is a deficient number, since it is larger than the sum of its proper divisors (12021678443).

78529037461 is a wasteful number, since it uses less digits than its factorization.

78529037461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134340.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 78529037461 in words is "seventy-eight billion, five hundred twenty-nine million, thirty-seven thousand, four hundred sixty-one".