62747801681 has 2 divisors, whose sum is σ = 62747801682. Its totient is φ = 62747801680.

The previous prime is 62747801659. The next prime is 62747801741. The reversal of 62747801681 is 18610874726.

It is a happy number.

62747801681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62732716225 + 15085456 = 250465^2 + 3884^2 .

It is a cyclic number.

It is not a de Polignac number, because 62747801681 - 2¹⁸ = 62747539537 is a prime.

It is a super-2 number, since 2×62747801681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (62747801621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31373900840 + 31373900841.

It is an arithmetic number, because the mean of its divisors is an integer number (31373900841).

Almost surely, 2^62747801681 is an apocalyptic number.

It is an amenable number.

62747801681 is a deficient number, since it is larger than the sum of its proper divisors (1).

62747801681 is an equidigital number, since it uses as much as digits as its factorization.

62747801681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 62747801681 in words is "sixty-two billion, seven hundred forty-seven million, eight hundred one thousand, six hundred eighty-one".