661562416364035 has 8 divisors (see below), whose sum is σ = 793897093105776. Its totient is φ = 529235137445280.

The previous prime is 661562416364021. The next prime is 661562416364051. The reversal of 661562416364035 is 530463614265166.

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

It is not a de Polignac number, because 661562416364035 - 2⁷ = 661562416363907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849259004 + ... + 1849616713.

It is an arithmetic number, because the mean of its divisors is an integer number (99237136638222).

Almost surely, 2^{661562416364035} is an apocalyptic number.

661562416364035 is a deficient number, since it is larger than the sum of its proper divisors (132334676741741).

661562416364035 is a wasteful number, since it uses less digits than its factorization.

661562416364035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3698911493.

The product of its (nonzero) digits is 55987200, while the sum is 58.

The spelling of 661562416364035 in words is "six hundred sixty-one trillion, five hundred sixty-two billion, four hundred sixteen million, three hundred sixty-four thousand, thirty-five".