32497609781 has 48 divisors (see below), whose sum is σ = 41536725120. Its totient is φ = 24879778560.

The previous prime is 32497609763. The next prime is 32497609843. The reversal of 32497609781 is 18790679423.

It is not a de Polignac number, because 32497609781 - 2¹⁸ = 32497347637 is a prime.

It is a super-2 number, since 2×32497609781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32497609741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5541791 + ... + 5547651.

It is an arithmetic number, because the mean of its divisors is an integer number (865348440).

Almost surely, 2^32497609781 is an apocalyptic number.

It is an amenable number.

32497609781 is a deficient number, since it is larger than the sum of its proper divisors (9039115339).

32497609781 is a wasteful number, since it uses less digits than its factorization.

32497609781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046 (or 6033 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 32497609781 in words is "thirty-two billion, four hundred ninety-seven million, six hundred nine thousand, seven hundred eighty-one".