61016611651487 has 2 divisors, whose sum is σ = 61016611651488. Its totient is φ = 61016611651486.

The previous prime is 61016611651481. The next prime is 61016611651529. The reversal of 61016611651487 is 78415611661016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61016611651487 - 2⁴⁴ = 43424425607071 is a prime.

It is a super-2 number, since 2×61016611651487² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61016611651481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30508305825743 + 30508305825744.

It is an arithmetic number, because the mean of its divisors is an integer number (30508305825744).

Almost surely, 2^{61016611651487} is an apocalyptic number.

61016611651487 is a deficient number, since it is larger than the sum of its proper divisors (1).

61016611651487 is an equidigital number, since it uses as much as digits as its factorization.

61016611651487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 61016611651487 in words is "sixty-one trillion, sixteen billion, six hundred eleven million, six hundred fifty-one thousand, four hundred eighty-seven".