33145553401 has 4 divisors (see below), whose sum is σ = 33148184400. Its totient is φ = 33142922404.

The previous prime is 33145553387. The next prime is 33145553407. The reversal of 33145553401 is 10435554133.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10435554133 = 257 ⋅40605269.

It is a cyclic number.

It is not a de Polignac number, because 33145553401 - 2²³ = 33137164793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33145553407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296511 + ... + 1321828.

It is an arithmetic number, because the mean of its divisors is an integer number (8287046100).

Almost surely, 2^33145553401 is an apocalyptic number.

It is an amenable number.

33145553401 is a deficient number, since it is larger than the sum of its proper divisors (2630999).

33145553401 is a wasteful number, since it uses less digits than its factorization.

33145553401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2630998.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 33145553401 in words is "thirty-three billion, one hundred forty-five million, five hundred fifty-three thousand, four hundred one".