53623850561820 has 288 divisors, whose sum is σ = 206934342451200. Its totient is φ = 11142618157440.

The previous prime is 53623850561777. The next prime is 53623850561861. The reversal of 53623850561820 is 2816505832635.

It is a happy number.

53623850561820 is a `hidden beast` number, since 5 + 3 + 6 + 2 + 3 + 8 + 50 + 561 + 8 + 20 = 666.

It is a super-4 number, since 4×53623850561820⁴ (a number of 56 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38800092 + ... + 40158371.

It is an arithmetic number, because the mean of its divisors is an integer number (718522022400).

Almost surely, 2^{53623850561820} is an apocalyptic number.

It is an amenable number.

53623850561820 is an abundant number, since it is smaller than the sum of its proper divisors (153310491889380).

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

53623850561820 is a wasteful number, since it uses less digits than its factorization.

53623850561820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78958510 (or 78958491 counting only the distinct ones).

The product of its (nonzero) digits is 10368000, while the sum is 54.

The spelling of 53623850561820 in words is "fifty-three trillion, six hundred twenty-three billion, eight hundred fifty million, five hundred sixty-one thousand, eight hundred twenty".