61532746901 has 4 divisors (see below), whose sum is σ = 61549111404. Its totient is φ = 61516382400.

The previous prime is 61532746843. The next prime is 61532746903. The reversal of 61532746901 is 10964723516.

61532746901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15843256900 + 45689490001 = 125870^2 + 213751^2 .

It is a cyclic number.

It is not a de Polignac number, because 61532746901 - 2²⁶ = 61465638037 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 (61532746903) 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, 8176610 + ... + 8184131.

It is an arithmetic number, because the mean of its divisors is an integer number (15387277851).

Almost surely, 2^61532746901 is an apocalyptic number.

It is an amenable number.

61532746901 is a deficient number, since it is larger than the sum of its proper divisors (16364503).

61532746901 is a wasteful number, since it uses less digits than its factorization.

61532746901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16364502.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 61532746901 in words is "sixty-one billion, five hundred thirty-two million, seven hundred forty-six thousand, nine hundred one".