74572248787 has 2 divisors, whose sum is σ = 74572248788. Its totient is φ = 74572248786.

The previous prime is 74572248763. The next prime is 74572248791. The reversal of 74572248787 is 78784227547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74572248787 - 2³¹ = 72424765139 is a prime.

It is a super-2 number, since 2×74572248787² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74572248587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37286124393 + 37286124394.

It is an arithmetic number, because the mean of its divisors is an integer number (37286124394).

Almost surely, 2^74572248787 is an apocalyptic number.

74572248787 is a deficient number, since it is larger than the sum of its proper divisors (1).

74572248787 is an equidigital number, since it uses as much as digits as its factorization.

74572248787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49172480, while the sum is 61.

The spelling of 74572248787 in words is "seventy-four billion, five hundred seventy-two million, two hundred forty-eight thousand, seven hundred eighty-seven".