53872187421 has 8 divisors (see below), whose sum is σ = 77354935840. Its totient is φ = 33152115312.

The previous prime is 53872187399. The next prime is 53872187477. The reversal of 53872187421 is 12478127835.

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

It is not a de Polignac number, because 53872187421 - 2¹¹ = 53872185373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53872187521) 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, 690669031 + ... + 690669108.

It is an arithmetic number, because the mean of its divisors is an integer number (9669366980).

Almost surely, 2^53872187421 is an apocalyptic number.

It is an amenable number.

53872187421 is a deficient number, since it is larger than the sum of its proper divisors (23482748419).

53872187421 is a wasteful number, since it uses less digits than its factorization.

53872187421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381338155.

The product of its digits is 752640, while the sum is 48.

The spelling of 53872187421 in words is "fifty-three billion, eight hundred seventy-two million, one hundred eighty-seven thousand, four hundred twenty-one".