61532164145 has 16 divisors (see below), whose sum is σ = 78115440000. Its totient is φ = 46400542848.

The previous prime is 61532164097. The next prime is 61532164147. The reversal of 61532164145 is 54146123516.

It is a cyclic number.

It is not a de Polignac number, because 61532164145 - 2¹² = 61532160049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61532164099 and 61532164108.

It is not an unprimeable number, because it can be changed into a prime (61532164147) 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, 1608500 + ... + 1646309.

It is an arithmetic number, because the mean of its divisors is an integer number (4882215000).

Almost surely, 2^61532164145 is an apocalyptic number.

It is an amenable number.

61532164145 is a deficient number, since it is larger than the sum of its proper divisors (16583275855).

61532164145 is a wasteful number, since it uses less digits than its factorization.

61532164145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255032.

The product of its digits is 86400, while the sum is 38.

The spelling of 61532164145 in words is "sixty-one billion, five hundred thirty-two million, one hundred sixty-four thousand, one hundred forty-five".