32155551420020 has 24 divisors (see below), whose sum is σ = 77173323408384. Its totient is φ = 11024760486816.

The previous prime is 32155551419987. The next prime is 32155551420131. The reversal of 32155551420020 is 2002415555123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114841254932 + ... + 114841255211.

It is an arithmetic number, because the mean of its divisors is an integer number (3215555142016).

Almost surely, 2^{32155551420020} is an apocalyptic number.

It is an amenable number.

32155551420020 is an abundant number, since it is smaller than the sum of its proper divisors (45017771988364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32155551420020 is a wasteful number, since it uses less digits than its factorization.

32155551420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229682510159 (or 229682510157 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 32155551420020 its reverse (2002415555123), we get a palindrome (34157966975143).

The spelling of 32155551420020 in words is "thirty-two trillion, one hundred fifty-five billion, five hundred fifty-one million, four hundred twenty thousand, twenty".