766955760040 has 64 divisors (see below), whose sum is σ = 1750569408000. Its totient is φ = 302365939200.

The previous prime is 766955760029. The next prime is 766955760073. The reversal of 766955760040 is 40067559667.

It is a super-2 number, since 2×766955760040² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1584765 + ... + 2011315.

It is an arithmetic number, because the mean of its divisors is an integer number (27352647000).

Almost surely, 2^766955760040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 766955760040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875284704000).

766955760040 is an abundant number, since it is smaller than the sum of its proper divisors (983613647960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

766955760040 is a wasteful number, since it uses less digits than its factorization.

766955760040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427210 (or 427206 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 55.

The spelling of 766955760040 in words is "seven hundred sixty-six billion, nine hundred fifty-five million, seven hundred sixty thousand, forty".