16161037461 has 48 divisors (see below), whose sum is σ = 25523534400. Its totient is φ = 10190510208.

The previous prime is 16161037433. The next prime is 16161037513. The reversal of 16161037461 is 16473016161.

16161037461 is a `hidden beast` number, since 1 + 6 + 1 + 610 + 37 + 4 + 6 + 1 = 666.

It is not a de Polignac number, because 16161037461 - 2⁹ = 16161036949 is a prime.

It is a super-2 number, since 2×16161037461² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16161037411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3270985 + ... + 3275921.

It is an arithmetic number, because the mean of its divisors is an integer number (531740300).

Almost surely, 2^16161037461 is an apocalyptic number.

It is an amenable number.

16161037461 is a deficient number, since it is larger than the sum of its proper divisors (9362496939).

16161037461 is an equidigital number, since it uses as much as digits as its factorization.

16161037461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5680 (or 5668 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 16161037461 in words is "sixteen billion, one hundred sixty-one million, thirty-seven thousand, four hundred sixty-one".