20122540401505 has 8 divisors (see below), whose sum is σ = 25196920155072. Its totient is φ = 15398117872368.

The previous prime is 20122540401493. The next prime is 20122540401527. The reversal of 20122540401505 is 50510404522102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122540401505 - 2¹⁵ = 20122540368737 is a prime.

It is a super-3 number, since 3×20122540401505³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

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, 87489305979 + ... + 87489306208.

It is an arithmetic number, because the mean of its divisors is an integer number (3149615019384).

Almost surely, 2^{20122540401505} is an apocalyptic number.

It is an amenable number.

20122540401505 is a deficient number, since it is larger than the sum of its proper divisors (5074379753567).

20122540401505 is a wasteful number, since it uses less digits than its factorization.

20122540401505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174978612215.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 20122540401505 its reverse (50510404522102), we get a palindrome (70632944923607).

The spelling of 20122540401505 in words is "twenty trillion, one hundred twenty-two billion, five hundred forty million, four hundred one thousand, five hundred five".