15161808546064 has 40 divisors (see below), whose sum is σ = 29637872083800. Its totient is φ = 7513548100608.

The previous prime is 15161808546041. The next prime is 15161808546097. The reversal of 15161808546064 is 46064580816151.

It can be written as a sum of positive squares in 4 ways, for example, as 2155024000000 + 13006784546064 = 1468000^2 + 3606492^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15161808545996 and 15161808546014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5868739 + ... + 8047714.

It is an arithmetic number, because the mean of its divisors is an integer number (740946802095).

Almost surely, 2^{15161808546064} is an apocalyptic number.

It is an amenable number.

15161808546064 is a deficient number, since it is larger than the sum of its proper divisors (14476063537736).

15161808546064 is a wasteful number, since it uses less digits than its factorization.

15161808546064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13917067 (or 13917061 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 55.

The spelling of 15161808546064 in words is "fifteen trillion, one hundred sixty-one billion, eight hundred eight million, five hundred forty-six thousand, sixty-four".