61037751787 has 2 divisors, whose sum is σ = 61037751788. Its totient is φ = 61037751786.

The previous prime is 61037751763. The next prime is 61037751791. The reversal of 61037751787 is 78715773016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61037751787 - 2⁷ = 61037751659 is a prime.

It is a super-2 number, since 2×61037751787² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61037751707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30518875893 + 30518875894.

It is an arithmetic number, because the mean of its divisors is an integer number (30518875894).

Almost surely, 2^61037751787 is an apocalyptic number.

61037751787 is a deficient number, since it is larger than the sum of its proper divisors (1).

61037751787 is an equidigital number, since it uses as much as digits as its factorization.

61037751787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728720, while the sum is 52.

The spelling of 61037751787 in words is "sixty-one billion, thirty-seven million, seven hundred fifty-one thousand, seven hundred eighty-seven".