72021146461 has 8 divisors (see below), whose sum is σ = 81277783200. Its totient is φ = 63216053040.

The previous prime is 72021146443. The next prime is 72021146473. The reversal of 72021146461 is 16464112027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72021146461 - 2⁵ = 72021146429 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 (72021146401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112885491 + ... + 112886128.

It is an arithmetic number, because the mean of its divisors is an integer number (10159722900).

Almost surely, 2^72021146461 is an apocalyptic number.

It is an amenable number.

72021146461 is a deficient number, since it is larger than the sum of its proper divisors (9256636739).

72021146461 is a wasteful number, since it uses less digits than its factorization.

72021146461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225771659.

The product of its (nonzero) digits is 16128, while the sum is 34.

Adding to 72021146461 its reverse (16464112027), we get a palindrome (88485258488).

The spelling of 72021146461 in words is "seventy-two billion, twenty-one million, one hundred forty-six thousand, four hundred sixty-one".