53451206055640 has 128 divisors (see below), whose sum is σ = 126888866496000. Its totient is φ = 20224752058368.

The previous prime is 53451206055497. The next prime is 53451206055659. The reversal of 53451206055640 is 4655060215435.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32051971 + ... + 33678349.

It is an arithmetic number, because the mean of its divisors is an integer number (991319269500).

Almost surely, 2^{53451206055640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53451206055640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63444433248000).

53451206055640 is an abundant number, since it is smaller than the sum of its proper divisors (73437660440360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53451206055640 is a wasteful number, since it uses less digits than its factorization.

53451206055640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626809 (or 1626805 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 46.

The spelling of 53451206055640 in words is "fifty-three trillion, four hundred fifty-one billion, two hundred six million, fifty-five thousand, six hundred forty".