751138473987 has 32 divisors (see below), whose sum is σ = 1214138661120. Its totient is φ = 455168880000.

The previous prime is 751138473919. The next prime is 751138473997. The reversal of 751138473987 is 789374831157.

751138473987 is a `hidden beast` number, since 7 + 51 + 1 + 38 + 473 + 9 + 87 = 666.

It is not a de Polignac number, because 751138473987 - 2²⁰ = 751137425411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (751138473997) 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 in 31 ways as a sum of consecutive naturals, for example, 1888987 + ... + 2251787.

It is an arithmetic number, because the mean of its divisors is an integer number (37941833160).

Almost surely, 2^751138473987 is an apocalyptic number.

751138473987 is a deficient number, since it is larger than the sum of its proper divisors (463000187133).

751138473987 is a wasteful number, since it uses less digits than its factorization.

751138473987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369792 (or 369786 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 751138473987 in words is "seven hundred fifty-one billion, one hundred thirty-eight million, four hundred seventy-three thousand, nine hundred eighty-seven".