1561001016151 has 4 divisors (see below), whose sum is σ = 1561012173400. Its totient is φ = 1560989858904.

The previous prime is 1561001016139. The next prime is 1561001016181. The reversal of 1561001016151 is 1516101001651.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1561001016151 - 2³⁹ = 1011245202263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1561001016181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5366061 + ... + 5649478.

It is an arithmetic number, because the mean of its divisors is an integer number (390253043350).

Almost surely, 2^{1561001016151} is an apocalyptic number.

1561001016151 is a deficient number, since it is larger than the sum of its proper divisors (11157249).

1561001016151 is a wasteful number, since it uses less digits than its factorization.

1561001016151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11157248.

The product of its (nonzero) digits is 900, while the sum is 28.

The spelling of 1561001016151 in words is "one trillion, five hundred sixty-one billion, one million, sixteen thousand, one hundred fifty-one".