20154691051411 has 12 divisors (see below), whose sum is σ = 23446192878120. Its totient is φ = 17274756824640.

The previous prime is 20154691051367. The next prime is 20154691051459. The reversal of 20154691051411 is 11415019645102.

It is a happy number.

It is not a de Polignac number, because 20154691051411 - 2⁷ = 20154691051283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20154691051711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7009350 + ... + 9457291.

It is an arithmetic number, because the mean of its divisors is an integer number (1953849406510).

Almost surely, 2^{20154691051411} is an apocalyptic number.

20154691051411 is a deficient number, since it is larger than the sum of its proper divisors (3291501826709).

20154691051411 is a wasteful number, since it uses less digits than its factorization.

20154691051411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16491634 (or 16491627 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 40.

The spelling of 20154691051411 in words is "twenty trillion, one hundred fifty-four billion, six hundred ninety-one million, fifty-one thousand, four hundred eleven".