161500426653 has 16 divisors (see below), whose sum is σ = 219324349440. Its totient is φ = 105677406384.

The previous prime is 161500426651. The next prime is 161500426693. The reversal of 161500426653 is 356624005161.

It is not a de Polignac number, because 161500426653 - 2¹ = 161500426651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161500426651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595701 + ... + 823322.

It is an arithmetic number, because the mean of its divisors is an integer number (13707771840).

Almost surely, 2^161500426653 is an apocalyptic number.

It is an amenable number.

161500426653 is a deficient number, since it is larger than the sum of its proper divisors (57823922787).

161500426653 is a wasteful number, since it uses less digits than its factorization.

161500426653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419728.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 161500426653 in words is "one hundred sixty-one billion, five hundred million, four hundred twenty-six thousand, six hundred fifty-three".