74999999999987 has 2 divisors, whose sum is σ = 74999999999988. Its totient is φ = 74999999999986.

The previous prime is 74999999999959. The next prime is 75000000000031. The reversal of 74999999999987 is 78999999999947.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 74999999999987 - 2⁶ = 74999999999923 is a prime.

It is not a weakly prime, because it can be changed into another prime (74999999999387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37499999999993 + 37499999999994.

It is an arithmetic number, because the mean of its divisors is an integer number (37499999999994).

Almost surely, 2^{74999999999987} is an apocalyptic number.

74999999999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

74999999999987 is an equidigital number, since it uses as much as digits as its factorization.

74999999999987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5467277940768, while the sum is 116.

It can be divided in two parts, 7 and 4999999999987, that added together give a palindrome (4999999999994).

The spelling of 74999999999987 in words is "seventy-four trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred eighty-seven".