154720421705346 has 32 divisors (see below), whose sum is σ = 353673387911808. Its totient is φ = 44202496056960.

The previous prime is 154720421705341. The next prime is 154720421705347. The reversal of 154720421705346 is 643507124027451.

It is not an unprimeable number, because it can be changed into a prime (154720421705341) 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, 138550425 + ... + 139662668.

It is an arithmetic number, because the mean of its divisors is an integer number (11052293372244).

Almost surely, 2^{154720421705346} is an apocalyptic number.

154720421705346 is an abundant number, since it is smaller than the sum of its proper divisors (198952966206462).

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

154720421705346 is a wasteful number, since it uses less digits than its factorization.

154720421705346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278226346.

The product of its (nonzero) digits is 5644800, while the sum is 51.

The spelling of 154720421705346 in words is "one hundred fifty-four trillion, seven hundred twenty billion, four hundred twenty-one million, seven hundred five thousand, three hundred forty-six".