61016616501 has 16 divisors (see below), whose sum is σ = 83154297600. Its totient is φ = 39779753408.

The previous prime is 61016616499. The next prime is 61016616517. The reversal of 61016616501 is 10561661016.

It is a cyclic number.

It is not a de Polignac number, because 61016616501 - 2¹ = 61016616499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61016616301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2766 + ... + 349343.

It is an arithmetic number, because the mean of its divisors is an integer number (5197143600).

Almost surely, 2^61016616501 is an apocalyptic number.

It is an amenable number.

61016616501 is a deficient number, since it is larger than the sum of its proper divisors (22137681099).

61016616501 is a wasteful number, since it uses less digits than its factorization.

61016616501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353388.

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 61016616501 in words is "sixty-one billion, sixteen million, six hundred sixteen thousand, five hundred one".