32721374487623 has 4 divisors (see below), whose sum is σ = 32769282796488. Its totient is φ = 32673466178760.

The previous prime is 32721374487617. The next prime is 32721374487629. The reversal of 32721374487623 is 32678447312723.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (32721374487617) and next prime (32721374487629).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32721374487623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32721374487629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23954153408 + ... + 23954154773.

It is an arithmetic number, because the mean of its divisors is an integer number (8192320699122).

Almost surely, 2^{32721374487623} is an apocalyptic number.

32721374487623 is a deficient number, since it is larger than the sum of its proper divisors (47908308865).

32721374487623 is an equidigital number, since it uses as much as digits as its factorization.

32721374487623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47908308864.

The product of its digits is 56899584, while the sum is 59.

The spelling of 32721374487623 in words is "thirty-two trillion, seven hundred twenty-one billion, three hundred seventy-four million, four hundred eighty-seven thousand, six hundred twenty-three".