32153421540 has 48 divisors (see below), whose sum is σ = 90284681088. Its totient is φ = 8549950464.

The previous prime is 32153421533. The next prime is 32153421551. The reversal of 32153421540 is 4512435123.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 32153421498 and 32153421507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737872 + ... + 780231.

It is an arithmetic number, because the mean of its divisors is an integer number (1880930856).

Almost surely, 2^32153421540 is an apocalyptic number.

32153421540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32153421540 is an abundant number, since it is smaller than the sum of its proper divisors (58131259548).

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

32153421540 is a wasteful number, since it uses less digits than its factorization.

32153421540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518468 (or 1518466 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 32153421540 its reverse (4512435123), we get a palindrome (36665856663).

The spelling of 32153421540 in words is "thirty-two billion, one hundred fifty-three million, four hundred twenty-one thousand, five hundred forty".