16161451134540 has 192 divisors, whose sum is σ = 45776016760320. Its totient is φ = 4260171202560.

The previous prime is 16161451134527. The next prime is 16161451134547. The reversal of 16161451134540 is 4543115416161.

It is a super-2 number, since 2×16161451134540² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16161451134492 and 16161451134501.

It is not an unprimeable number, because it can be changed into a prime (16161451134547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1610182402 + ... + 1610192438.

It is an arithmetic number, because the mean of its divisors is an integer number (238416753960).

Almost surely, 2^{16161451134540} is an apocalyptic number.

16161451134540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16161451134540 is an abundant number, since it is smaller than the sum of its proper divisors (29614565625780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16161451134540 is a wasteful number, since it uses less digits than its factorization.

16161451134540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112 (or 11110 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

It can be divided in two parts, 1616145 and 1134540, that added together give a triangular number (2750685 = T₂₃₄₅).

The spelling of 16161451134540 in words is "sixteen trillion, one hundred sixty-one billion, four hundred fifty-one million, one hundred thirty-four thousand, five hundred forty".