161611106061662 has 32 divisors (see below), whose sum is σ = 257002524535680. Its totient is φ = 75955732902400.

The previous prime is 161611106061653. The next prime is 161611106061739. The reversal of 161611106061662 is 266160601116161.

It is a happy number.

It is a super-2 number, since 2×161611106061662² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87420539 + ... + 89250057.

It is an arithmetic number, because the mean of its divisors is an integer number (8031328891740).

Almost surely, 2^{161611106061662} is an apocalyptic number.

161611106061662 is a deficient number, since it is larger than the sum of its proper divisors (95391418474018).

161611106061662 is a wasteful number, since it uses less digits than its factorization.

161611106061662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832836.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 161611106061662 in words is "one hundred sixty-one trillion, six hundred eleven billion, one hundred six million, sixty-one thousand, six hundred sixty-two".