15778486508652 has 216 divisors, whose sum is σ = 46479634826352. Its totient is φ = 4500045849600.

The previous prime is 15778486508641. The next prime is 15778486508683. The reversal of 15778486508652 is 25680568487751.

15778486508652 is a `hidden beast` number, since 1 + 5 + 7 + 78 + 48 + 6 + 508 + 6 + 5 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3552910752 + ... + 3552915192.

Almost surely, 2^{15778486508652} is an apocalyptic number.

15778486508652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15778486508652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23239817413176).

15778486508652 is an abundant number, since it is smaller than the sum of its proper divisors (30701148317700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15778486508652 is a wasteful number, since it uses less digits than its factorization.

15778486508652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629 (or 7617 counting only the distinct ones).

The product of its (nonzero) digits is 903168000, while the sum is 72.

The spelling of 15778486508652 in words is "fifteen trillion, seven hundred seventy-eight billion, four hundred eighty-six million, five hundred eight thousand, six hundred fifty-two".