766225157155 has 4 divisors (see below), whose sum is σ = 919470188592. Its totient is φ = 612980125720.

The previous prime is 766225157069. The next prime is 766225157209. The reversal of 766225157155 is 551751522667.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551751522667 = 16633 ⋅33172099.

It is a de Polignac number, because none of the positive numbers 2^k-766225157155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76622515711 + ... + 76622515720.

It is an arithmetic number, because the mean of its divisors is an integer number (229867547148).

Almost surely, 2^766225157155 is an apocalyptic number.

766225157155 is a deficient number, since it is larger than the sum of its proper divisors (153245031437).

766225157155 is a wasteful number, since it uses less digits than its factorization.

766225157155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153245031436.

The product of its digits is 4410000, while the sum is 52.

The spelling of 766225157155 in words is "seven hundred sixty-six billion, two hundred twenty-five million, one hundred fifty-seven thousand, one hundred fifty-five".