81514750148 has 48 divisors (see below), whose sum is σ = 154087629696. Its totient is φ = 37508835840.

The previous prime is 81514750147. The next prime is 81514750157. The reversal of 81514750148 is 84105741518.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 81514750099 and 81514750108.

It is not an unprimeable number, because it can be changed into a prime (81514750147) 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, 33640865 + ... + 33643287.

It is an arithmetic number, because the mean of its divisors is an integer number (3210158952).

Almost surely, 2^81514750148 is an apocalyptic number.

It is an amenable number.

81514750148 is a deficient number, since it is larger than the sum of its proper divisors (72572879548).

81514750148 is a wasteful number, since it uses less digits than its factorization.

81514750148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124 (or 4122 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 44.

The spelling of 81514750148 in words is "eighty-one billion, five hundred fourteen million, seven hundred fifty thousand, one hundred forty-eight".