153402004252661 has 2 divisors, whose sum is σ = 153402004252662. Its totient is φ = 153402004252660.

The previous prime is 153402004252631. The next prime is 153402004252667. The reversal of 153402004252661 is 166252400204351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151898082193636 + 1503922059025 = 12324694^2 + 1226345^2 .

It is a cyclic number.

It is not a de Polignac number, because 153402004252661 - 2¹⁸ = 153402003990517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (153402004252667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76701002126330 + 76701002126331.

It is an arithmetic number, because the mean of its divisors is an integer number (76701002126331).

Almost surely, 2^{153402004252661} is an apocalyptic number.

It is an amenable number.

153402004252661 is a deficient number, since it is larger than the sum of its proper divisors (1).

153402004252661 is an equidigital number, since it uses as much as digits as its factorization.

153402004252661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 153402004252661 in words is "one hundred fifty-three trillion, four hundred two billion, four million, two hundred fifty-two thousand, six hundred sixty-one".