75007631987 has 2 divisors, whose sum is σ = 75007631988. Its totient is φ = 75007631986.

The previous prime is 75007631981. The next prime is 75007632041. The reversal of 75007631987 is 78913670057.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75007631987 - 2¹⁶ = 75007566451 is a prime.

It is a super-2 number, since 2×75007631987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75007631981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37503815993 + 37503815994.

It is an arithmetic number, because the mean of its divisors is an integer number (37503815994).

Almost surely, 2^75007631987 is an apocalyptic number.

75007631987 is a deficient number, since it is larger than the sum of its proper divisors (1).

75007631987 is an equidigital number, since it uses as much as digits as its factorization.

75007631987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 75007631987 in words is "seventy-five billion, seven million, six hundred thirty-one thousand, nine hundred eighty-seven".