74989298787 has 16 divisors (see below), whose sum is σ = 109442141088. Its totient is φ = 45390746880.

The previous prime is 74989298773. The next prime is 74989298801. The reversal of 74989298787 is 78789298947.

It is an interprime number because it is at equal distance from previous prime (74989298773) and next prime (74989298801).

It is not a de Polignac number, because 74989298787 - 2¹⁵ = 74989266019 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (74989298707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15758298 + ... + 15763055.

It is an arithmetic number, because the mean of its divisors is an integer number (6840133818).

Almost surely, 2^74989298787 is an apocalyptic number.

74989298787 is a deficient number, since it is larger than the sum of its proper divisors (34452842301).

74989298787 is a wasteful number, since it uses less digits than its factorization.

74989298787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31521430.

The product of its digits is 1024192512, while the sum is 78.

The spelling of 74989298787 in words is "seventy-four billion, nine hundred eighty-nine million, two hundred ninety-eight thousand, seven hundred eighty-seven".