61628311457 has 8 divisors (see below), whose sum is σ = 63621203712. Its totient is φ = 59635724400.

The previous prime is 61628311453. The next prime is 61628311487. The reversal of 61628311457 is 75411382616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61628311457 - 2² = 61628311453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61628311453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376907 + ... + 515087.

It is an arithmetic number, because the mean of its divisors is an integer number (7952650464).

Almost surely, 2^61628311457 is an apocalyptic number.

It is an amenable number.

61628311457 is a deficient number, since it is larger than the sum of its proper divisors (1992892255).

61628311457 is a wasteful number, since it uses less digits than its factorization.

61628311457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152599.

The product of its digits is 241920, while the sum is 44.

The spelling of 61628311457 in words is "sixty-one billion, six hundred twenty-eight million, three hundred eleven thousand, four hundred fifty-seven".