161211553062 has 16 divisors (see below), whose sum is σ = 368483549952. Its totient is φ = 46060443720.

The previous prime is 161211553043. The next prime is 161211553081. The reversal of 161211553062 is 260355112161.

It is an interprime number because it is at equal distance from previous prime (161211553043) and next prime (161211553081).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919185114 + ... + 1919185197.

It is an arithmetic number, because the mean of its divisors is an integer number (23030221872).

Almost surely, 2^161211553062 is an apocalyptic number.

161211553062 is an abundant number, since it is smaller than the sum of its proper divisors (207271996890).

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

161211553062 is a wasteful number, since it uses less digits than its factorization.

161211553062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838370323.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 161211553062 in words is "one hundred sixty-one billion, two hundred eleven million, five hundred fifty-three thousand, sixty-two".