78746863461 has 64 divisors (see below), whose sum is σ = 122982629376. Its totient is φ = 43893964800.

The previous prime is 78746863439. The next prime is 78746863483. The reversal of 78746863461 is 16436864787.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78746863439) and next prime (78746863483).

It is not a de Polignac number, because 78746863461 - 2⁶ = 78746863397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78746863395 and 78746863404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78746863061) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 122849701 + ... + 122850341.

It is an arithmetic number, because the mean of its divisors is an integer number (1921603584).

Almost surely, 2^78746863461 is an apocalyptic number.

It is an amenable number.

78746863461 is a deficient number, since it is larger than the sum of its proper divisors (44235765915).

78746863461 is a wasteful number, since it uses less digits than its factorization.

78746863461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its digits is 32514048, while the sum is 60.

The spelling of 78746863461 in words is "seventy-eight billion, seven hundred forty-six million, eight hundred sixty-three thousand, four hundred sixty-one".