61454432587 has 2 divisors, whose sum is σ = 61454432588. Its totient is φ = 61454432586.

The previous prime is 61454432539. The next prime is 61454432597. The reversal of 61454432587 is 78523445416.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61454432587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61454432587.

It is not a weakly prime, because it can be changed into another prime (61454432597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30727216293 + 30727216294.

It is an arithmetic number, because the mean of its divisors is an integer number (30727216294).

Almost surely, 2^61454432587 is an apocalyptic number.

61454432587 is a deficient number, since it is larger than the sum of its proper divisors (1).

61454432587 is an equidigital number, since it uses as much as digits as its factorization.

61454432587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3225600, while the sum is 49.

The spelling of 61454432587 in words is "sixty-one billion, four hundred fifty-four million, four hundred thirty-two thousand, five hundred eighty-seven".