11445520061 has 16 divisors (see below), whose sum is σ = 12106298880. Its totient is φ = 10798930560.

The previous prime is 11445520057. The next prime is 11445520117. The reversal of 11445520061 is 16002554411.

It is not a de Polignac number, because 11445520061 - 2² = 11445520057 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 (11445522061) 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, 875771 + ... + 888743.

It is an arithmetic number, because the mean of its divisors is an integer number (756643680).

Almost surely, 2^11445520061 is an apocalyptic number.

It is an amenable number.

11445520061 is a deficient number, since it is larger than the sum of its proper divisors (660778819).

11445520061 is a wasteful number, since it uses less digits than its factorization.

11445520061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13516.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 11445520061 in words is "eleven billion, four hundred forty-five million, five hundred twenty thousand, sixty-one".