970957978381 has 2 divisors, whose sum is σ = 970957978382. Its totient is φ = 970957978380.

The previous prime is 970957978373. The next prime is 970957978387. The reversal of 970957978381 is 183879759079.

970957978381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902625404356 + 68332574025 = 950066^2 + 261405^2 .

It is an emirp because it is prime and its reverse (183879759079) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 970957978381 - 2³ = 970957978373 is a prime.

It is a super-2 number, since 2×970957978381² (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 (970957978387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485478989190 + 485478989191.

It is an arithmetic number, because the mean of its divisors is an integer number (485478989191).

Almost surely, 2^970957978381 is an apocalyptic number.

It is an amenable number.

970957978381 is a deficient number, since it is larger than the sum of its proper divisors (1).

970957978381 is an equidigital number, since it uses as much as digits as its factorization.

970957978381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240045120, while the sum is 73.

The spelling of 970957978381 in words is "nine hundred seventy billion, nine hundred fifty-seven million, nine hundred seventy-eight thousand, three hundred eighty-one".