1561650161115 has 16 divisors (see below), whose sum is σ = 2725789372416. Its totient is φ = 757163714400.

The previous prime is 1561650161081. The next prime is 1561650161143. The reversal of 1561650161115 is 5111610561651.

It is not a de Polignac number, because 1561650161115 - 2⁸ = 1561650160859 is a prime.

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, 4732273051 + ... + 4732273380.

It is an arithmetic number, because the mean of its divisors is an integer number (170361835776).

Almost surely, 2^{1561650161115} is an apocalyptic number.

1561650161115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1561650161115 is a deficient number, since it is larger than the sum of its proper divisors (1164139211301).

1561650161115 is a wasteful number, since it uses less digits than its factorization.

1561650161115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9464546450.

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 1561650161115 in words is "one trillion, five hundred sixty-one billion, six hundred fifty million, one hundred sixty-one thousand, one hundred fifteen".