1561001016150 has 96 divisors (see below), whose sum is σ = 4308075694080. Its totient is φ = 415623324960.

The previous prime is 1561001016139. The next prime is 1561001016181. The reversal of 1561001016150 is 516101001651.

1561001016150 is a `hidden beast` number, since 15 + 610 + 0 + 10 + 16 + 15 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20134 + ... + 1767033.

It is an arithmetic number, because the mean of its divisors is an integer number (44875788480).

Almost surely, 2^{1561001016150} is an apocalyptic number.

1561001016150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1561001016150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2154037847040).

1561001016150 is an abundant number, since it is smaller than the sum of its proper divisors (2747074677930).

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

1561001016150 is a wasteful number, since it uses less digits than its factorization.

1561001016150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1787835 (or 1787824 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 1561001016150 in words is "one trillion, five hundred sixty-one billion, one million, sixteen thousand, one hundred fifty".