15343752797978 has 64 divisors (see below), whose sum is σ = 25368437952000. Its totient is φ = 6902554444800.

The previous prime is 15343752797963. The next prime is 15343752797993. The reversal of 15343752797978 is 87979725734351.

It is an interprime number because it is at equal distance from previous prime (15343752797963) and next prime (15343752797993).

It is a junction number, because it is equal to n+sod(n) for n = 15343752797899 and 15343752797908.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 644981708 + ... + 645005496.

It is an arithmetic number, because the mean of its divisors is an integer number (396381843000).

Almost surely, 2^{15343752797978} is an apocalyptic number.

15343752797978 is a deficient number, since it is larger than the sum of its proper divisors (10024685154022).

15343752797978 is a wasteful number, since it uses less digits than its factorization.

15343752797978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24791.

The product of its digits is 2800526400, while the sum is 77.

The spelling of 15343752797978 in words is "fifteen trillion, three hundred forty-three billion, seven hundred fifty-two million, seven hundred ninety-seven thousand, nine hundred seventy-eight".