16461251563545 has 40 divisors (see below), whose sum is σ = 29508888435840. Its totient is φ = 8779164337440.

The previous prime is 16461251563531. The next prime is 16461251563591. The reversal of 16461251563545 is 54536515216461.

16461251563545 is a `hidden beast` number, since 1 + 6 + 4 + 6 + 1 + 25 + 1 + 563 + 54 + 5 = 666.

16461251563545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16461251563545 - 2⁷ = 16461251563417 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16461251563491 and 16461251563500.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22165246 + ... + 22895864.

It is an arithmetic number, because the mean of its divisors is an integer number (737722210896).

Almost surely, 2^{16461251563545} is an apocalyptic number.

16461251563545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16461251563545 is a deficient number, since it is larger than the sum of its proper divisors (13047636872295).

16461251563545 is an equidigital number, since it uses as much as digits as its factorization.

16461251563545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786267 (or 786258 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 54.

The spelling of 16461251563545 in words is "sixteen trillion, four hundred sixty-one billion, two hundred fifty-one million, five hundred sixty-three thousand, five hundred forty-five".