20450151374 has 4 divisors (see below), whose sum is σ = 30675227064. Its totient is φ = 10225075686.

The previous prime is 20450151373. The next prime is 20450151401. The reversal of 20450151374 is 47315105402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47315105402 = 2 ⋅23657552701.

It is a self number, because there is not a number n which added to its sum of digits gives 20450151374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20450151373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5112537842 + ... + 5112537845.

It is an arithmetic number, because the mean of its divisors is an integer number (7668806766).

Almost surely, 2^20450151374 is an apocalyptic number.

20450151374 is a deficient number, since it is larger than the sum of its proper divisors (10225075690).

20450151374 is a wasteful number, since it uses less digits than its factorization.

20450151374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10225075689.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 20450151374 its reverse (47315105402), we get a palindrome (67765256776).

The spelling of 20450151374 in words is "twenty billion, four hundred fifty million, one hundred fifty-one thousand, three hundred seventy-four".