33372507421 has 16 divisors (see below), whose sum is σ = 38972044800. Its totient is φ = 28254711600.

The previous prime is 33372507401. The next prime is 33372507439. The reversal of 33372507421 is 12470527333.

It is a cyclic number.

It is not a de Polignac number, because 33372507421 - 2¹¹ = 33372505373 is a prime.

It is a super-2 number, since 2×33372507421² (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 (33372507401) 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, 1340865 + ... + 1365526.

It is an arithmetic number, because the mean of its divisors is an integer number (2435752800).

Almost surely, 2^33372507421 is an apocalyptic number.

It is an amenable number.

33372507421 is a deficient number, since it is larger than the sum of its proper divisors (5599537379).

33372507421 is a wasteful number, since it uses less digits than its factorization.

33372507421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706480.

The product of its (nonzero) digits is 105840, while the sum is 37.

The spelling of 33372507421 in words is "thirty-three billion, three hundred seventy-two million, five hundred seven thousand, four hundred twenty-one".