901088866649 has 2 divisors, whose sum is σ = 901088866650. Its totient is φ = 901088866648.

The previous prime is 901088866547. The next prime is 901088866679. The reversal of 901088866649 is 946668880109.

901088866649 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., 827190250000 + 73898616649 = 909500^2 + 271843^2 .

It is a cyclic number.

It is not a de Polignac number, because 901088866649 - 2¹⁶ = 901088801113 is a prime.

It is a super-2 number, since 2×901088866649² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (901088866679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450544433324 + 450544433325.

It is an arithmetic number, because the mean of its divisors is an integer number (450544433325).

Almost surely, 2^901088866649 is an apocalyptic number.

It is an amenable number.

901088866649 is a deficient number, since it is larger than the sum of its proper divisors (1).

901088866649 is an equidigital number, since it uses as much as digits as its factorization.

901088866649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35831808, while the sum is 65.

The spelling of 901088866649 in words is "nine hundred one billion, eighty-eight million, eight hundred sixty-six thousand, six hundred forty-nine".