78540180777830 has 32 divisors (see below), whose sum is σ = 153733975487136. Its totient is φ = 28768931080704.

The previous prime is 78540180777811. The next prime is 78540180777893. The reversal of 78540180777830 is 3877708104587.

It is a super-2 number, since 2×78540180777830² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6243251324 + ... + 6243263903.

It is an arithmetic number, because the mean of its divisors is an integer number (4804186733973).

Almost surely, 2^{78540180777830} is an apocalyptic number.

78540180777830 is a deficient number, since it is larger than the sum of its proper divisors (75193794709306).

78540180777830 is a wasteful number, since it uses less digits than its factorization.

78540180777830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486515288.

The product of its (nonzero) digits is 73758720, while the sum is 65.

The spelling of 78540180777830 in words is "seventy-eight trillion, five hundred forty billion, one hundred eighty million, seven hundred seventy-seven thousand, eight hundred thirty".