20115465562140 has 96 divisors (see below), whose sum is σ = 60762467545920. Its totient is φ = 4942796998656.

The previous prime is 20115465562117. The next prime is 20115465562169. The reversal of 20115465562140 is 4126556451102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20115465562092 and 20115465562101.

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, 22217919 + ... + 23105558.

It is an arithmetic number, because the mean of its divisors is an integer number (632942370270).

Almost surely, 2^{20115465562140} is an apocalyptic number.

20115465562140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20115465562140 is an abundant number, since it is smaller than the sum of its proper divisors (40647001983780).

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

20115465562140 is a wasteful number, since it uses less digits than its factorization.

20115465562140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45324071 (or 45324069 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 20115465562140 in words is "twenty trillion, one hundred fifteen billion, four hundred sixty-five million, five hundred sixty-two thousand, one hundred forty".