142355221651601 has 16 divisors (see below), whose sum is σ = 163582394152320. Its totient is φ = 121351218629760.

The previous prime is 142355221651571. The next prime is 142355221651739. The reversal of 142355221651601 is 106156122553241.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-142355221651601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142355221656601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16997711 + ... + 23950628.

It is an arithmetic number, because the mean of its divisors is an integer number (10223899634520).

Almost surely, 2^{142355221651601} is an apocalyptic number.

It is an amenable number.

142355221651601 is a deficient number, since it is larger than the sum of its proper divisors (21227172500719).

142355221651601 is a wasteful number, since it uses less digits than its factorization.

142355221651601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40951064.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 142355221651601 in words is "one hundred forty-two trillion, three hundred fifty-five billion, two hundred twenty-one million, six hundred fifty-one thousand, six hundred one".