766440058381 has 16 divisors (see below), whose sum is σ = 819306275328. Its totient is φ = 715791585600.

The previous prime is 766440058369. The next prime is 766440058403. The reversal of 766440058381 is 183850044667.

766440058381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-766440058381 is a prime.

It is a super-2 number, since 2×766440058381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766440058781) 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, 3723451 + ... + 3923896.

It is an arithmetic number, because the mean of its divisors is an integer number (51206642208).

Almost surely, 2^766440058381 is an apocalyptic number.

It is an amenable number.

766440058381 is a deficient number, since it is larger than the sum of its proper divisors (52866216947).

766440058381 is a wasteful number, since it uses less digits than its factorization.

766440058381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7647492.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 766440058381 in words is "seven hundred sixty-six billion, four hundred forty million, fifty-eight thousand, three hundred eighty-one".