15948774401 has 8 divisors (see below), whose sum is σ = 19186495680. Its totient is φ = 12950884368.

The previous prime is 15948774389. The next prime is 15948774437. The reversal of 15948774401 is 10447784951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15948774401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15948774401.

It is not an unprimeable number, because it can be changed into a prime (15948776401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59957666 + ... + 59957931.

It is an arithmetic number, because the mean of its divisors is an integer number (2398311960).

Almost surely, 2^15948774401 is an apocalyptic number.

It is an amenable number.

15948774401 is a deficient number, since it is larger than the sum of its proper divisors (3237721279).

15948774401 is a wasteful number, since it uses less digits than its factorization.

15948774401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119915623.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The spelling of 15948774401 in words is "fifteen billion, nine hundred forty-eight million, seven hundred seventy-four thousand, four hundred one".