61690516071055 has 16 divisors (see below), whose sum is σ = 74362148517888. Its totient is φ = 49130355924000.

The previous prime is 61690516070867. The next prime is 61690516071071. The reversal of 61690516071055 is 55017061509616.

It is not a de Polignac number, because 61690516071055 - 2²⁵ = 61690482516623 is a prime.

It is a super-2 number, since 2×61690516071055² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61690516070993 and 61690516071011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16824301 + ... + 20160310.

It is an arithmetic number, because the mean of its divisors is an integer number (4647634282368).

Almost surely, 2^{61690516071055} is an apocalyptic number.

61690516071055 is a deficient number, since it is larger than the sum of its proper divisors (12671632446833).

61690516071055 is a wasteful number, since it uses less digits than its factorization.

61690516071055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36986118.

The product of its (nonzero) digits is 1701000, while the sum is 52.

The spelling of 61690516071055 in words is "sixty-one trillion, six hundred ninety billion, five hundred sixteen million, seventy-one thousand, fifty-five".