53861953440 has 48 divisors (see below), whose sum is σ = 169665154848. Its totient is φ = 14363187456.

The previous prime is 53861953433. The next prime is 53861953477. The reversal of 53861953440 is 4435916835.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×53861953440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 53861953440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56105722 + ... + 56106681.

It is an arithmetic number, because the mean of its divisors is an integer number (3534690726).

Almost surely, 2^53861953440 is an apocalyptic number.

It is an amenable number.

53861953440 is an abundant number, since it is smaller than the sum of its proper divisors (115803201408).

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

53861953440 is a wasteful number, since it uses less digits than its factorization.

53861953440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112212421 (or 112212413 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 53861953440 in words is "fifty-three billion, eight hundred sixty-one million, nine hundred fifty-three thousand, four hundred forty".