161429436451 has 8 divisors (see below), whose sum is σ = 179921353680. Its totient is φ = 143937082368.

The previous prime is 161429436449. The next prime is 161429436461. The reversal of 161429436451 is 154634924161.

161429436451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 161429436451 - 2¹ = 161429436449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161429436461) 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, 249890446 + ... + 249891091.

It is an arithmetic number, because the mean of its divisors is an integer number (22490169210).

Almost surely, 2^161429436451 is an apocalyptic number.

161429436451 is a deficient number, since it is larger than the sum of its proper divisors (18491917229).

161429436451 is a wasteful number, since it uses less digits than its factorization.

161429436451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499781573.

The product of its digits is 622080, while the sum is 46.

The spelling of 161429436451 in words is "one hundred sixty-one billion, four hundred twenty-nine million, four hundred thirty-six thousand, four hundred fifty-one".