78598771461 has 48 divisors (see below), whose sum is σ = 131174219904. Its totient is φ = 44421322752.

The previous prime is 78598771451. The next prime is 78598771513. The reversal of 78598771461 is 16417789587.

78598771461 is a `hidden beast` number, since 7 + 85 + 98 + 7 + 7 + 1 + 461 = 666.

It is not a de Polignac number, because 78598771461 - 2⁷ = 78598771333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78598771441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12139321 + ... + 12145793.

It is an arithmetic number, because the mean of its divisors is an integer number (2732796248).

Almost surely, 2^78598771461 is an apocalyptic number.

It is an amenable number.

78598771461 is a deficient number, since it is larger than the sum of its proper divisors (52575448443).

78598771461 is a wasteful number, since it uses less digits than its factorization.

78598771461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8570 (or 8567 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 63.

The spelling of 78598771461 in words is "seventy-eight billion, five hundred ninety-eight million, seven hundred seventy-one thousand, four hundred sixty-one".