2116653401 has 2 divisors, whose sum is σ = 2116653402. Its totient is φ = 2116653400.

The previous prime is 2116653397. The next prime is 2116653431. The reversal of 2116653401 is 1043566112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1650309376 + 466344025 = 40624^2 + 21595^2 .

It is a cyclic number.

It is not a de Polignac number, because 2116653401 - 2² = 2116653397 is a prime.

It is not a weakly prime, because it can be changed into another prime (2116653431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1058326700 + 1058326701.

It is an arithmetic number, because the mean of its divisors is an integer number (1058326701).

Almost surely, 2^2116653401 is an apocalyptic number.

It is an amenable number.

2116653401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2116653401 is an equidigital number, since it uses as much as digits as its factorization.

2116653401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2116653401 is about 46007.1016365952. The cubic root of 2116653401 is about 1283.9553351974.

The spelling of 2116653401 in words is "two billion, one hundred sixteen million, six hundred fifty-three thousand, four hundred one".