154136019261 has 16 divisors (see below), whose sum is σ = 236723339264. Its totient is φ = 87384198384.

The previous prime is 154136019251. The next prime is 154136019269. The reversal of 154136019261 is 162910631451.

It is not a de Polignac number, because 154136019261 - 2⁹ = 154136018749 is a prime.

It is a super-2 number, since 2×154136019261² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154136019269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28894225 + ... + 28899558.

It is an arithmetic number, because the mean of its divisors is an integer number (14795208704).

Almost surely, 2^154136019261 is an apocalyptic number.

It is an amenable number.

154136019261 is a deficient number, since it is larger than the sum of its proper divisors (82587320003).

154136019261 is a wasteful number, since it uses less digits than its factorization.

154136019261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57793920.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 154136019261 in words is "one hundred fifty-four billion, one hundred thirty-six million, nineteen thousand, two hundred sixty-one".