81414935007 has 8 divisors (see below), whose sum is σ = 124060853376. Its totient is φ = 46522819992.

The previous prime is 81414934967. The next prime is 81414935011. The reversal of 81414935007 is 70053941418.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81414935007 - 2¹⁸ = 81414672863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 81414935007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81414935047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938450813 + ... + 1938450854.

It is an arithmetic number, because the mean of its divisors is an integer number (15507606672).

Almost surely, 2^81414935007 is an apocalyptic number.

81414935007 is a deficient number, since it is larger than the sum of its proper divisors (42645918369).

81414935007 is a wasteful number, since it uses less digits than its factorization.

81414935007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876901677.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 81414935007 in words is "eighty-one billion, four hundred fourteen million, nine hundred thirty-five thousand, seven".