61580240534 has 4 divisors (see below), whose sum is σ = 92370360804. Its totient is φ = 30790120266.

The previous prime is 61580240497. The next prime is 61580240537. The reversal of 61580240534 is 43504208516.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61580240537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15395060132 + ... + 15395060135.

It is an arithmetic number, because the mean of its divisors is an integer number (23092590201).

Almost surely, 2^61580240534 is an apocalyptic number.

61580240534 is a deficient number, since it is larger than the sum of its proper divisors (30790120270).

61580240534 is a wasteful number, since it uses less digits than its factorization.

61580240534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30790120269.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 61580240534 in words is "sixty-one billion, five hundred eighty million, two hundred forty thousand, five hundred thirty-four".