161025007135777 has 16 divisors (see below), whose sum is σ = 170562751719552. Its totient is φ = 151494564798720.

The previous prime is 161025007135757. The next prime is 161025007135789. The reversal of 161025007135777 is 777531700520161.

It is not a de Polignac number, because 161025007135777 - 2⁴⁷ = 20287518780449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161025007135747) 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, 2214065788 + ... + 2214138514.

It is an arithmetic number, because the mean of its divisors is an integer number (10660171982472).

Almost surely, 2^{161025007135777} is an apocalyptic number.

161025007135777 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

161025007135777 is a deficient number, since it is larger than the sum of its proper divisors (9537744583775).

161025007135777 is a wasteful number, since it uses less digits than its factorization.

161025007135777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121128.

The product of its (nonzero) digits is 2160900, while the sum is 52.

The spelling of 161025007135777 in words is "one hundred sixty-one trillion, twenty-five billion, seven million, one hundred thirty-five thousand, seven hundred seventy-seven".