916680157381 has 2 divisors, whose sum is σ = 916680157382. Its totient is φ = 916680157380.

The previous prime is 916680157373. The next prime is 916680157403. The reversal of 916680157381 is 183751086619.

It is a happy number.

916680157381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 915791580900 + 888576481 = 956970^2 + 29809^2 .

It is an emirp because it is prime and its reverse (183751086619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 916680157381 - 2³ = 916680157373 is a prime.

It is a super-2 number, since 2×916680157381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (916680157681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458340078690 + 458340078691.

It is an arithmetic number, because the mean of its divisors is an integer number (458340078691).

Almost surely, 2^916680157381 is an apocalyptic number.

It is an amenable number.

916680157381 is a deficient number, since it is larger than the sum of its proper divisors (1).

916680157381 is an equidigital number, since it uses as much as digits as its factorization.

916680157381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 916680157381 in words is "nine hundred sixteen billion, six hundred eighty million, one hundred fifty-seven thousand, three hundred eighty-one".