15778778304960 has 280 divisors, whose sum is σ = 61230426917616. Its totient is φ = 3825158307840.

The previous prime is 15778778304953. The next prime is 15778778304967. The reversal of 15778778304960 is 6940387787751.

15778778304960 is a `hidden beast` number, since 1 + 57 + 7 + 8 + 7 + 7 + 83 + 0 + 496 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (15778778304953) and next prime (15778778304967).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15778778304967) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27385297 + ... + 27955536.

Almost surely, 2^{15778778304960} is an apocalyptic number.

15778778304960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15778778304960 is an abundant number, since it is smaller than the sum of its proper divisors (45451648612656).

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

15778778304960 is a wasteful number, since it uses less digits than its factorization.

15778778304960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55340873 (or 55340854 counting only the distinct ones).

The product of its (nonzero) digits is 497871360, while the sum is 72.

The spelling of 15778778304960 in words is "fifteen trillion, seven hundred seventy-eight billion, seven hundred seventy-eight million, three hundred four thousand, nine hundred sixty".