76249881891909 has 48 divisors (see below), whose sum is σ = 120207698619840. Its totient is φ = 46190374433280.

The previous prime is 76249881891907. The next prime is 76249881891917. The reversal of 76249881891909 is 90919818894267.

It is a happy number.

76249881891909 is a `hidden beast` number, since 7 + 6 + 249 + 8 + 8 + 189 + 190 + 9 = 666.

It is not a de Polignac number, because 76249881891909 - 2¹ = 76249881891907 is a prime.

It is a Smith number, since the sum of its digits (81) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76249881891907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2147321847 + ... + 2147357355.

It is an arithmetic number, because the mean of its divisors is an integer number (2504327054580).

Almost surely, 2^{76249881891909} is an apocalyptic number.

It is an amenable number.

76249881891909 is a deficient number, since it is larger than the sum of its proper divisors (43957816727931).

76249881891909 is a wasteful number, since it uses less digits than its factorization.

76249881891909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45090 (or 45087 counting only the distinct ones).

The product of its (nonzero) digits is 1128701952, while the sum is 81.

The spelling of 76249881891909 in words is "seventy-six trillion, two hundred forty-nine billion, eight hundred eighty-one million, eight hundred ninety-one thousand, nine hundred nine".