146051511643551 has 4 divisors (see below), whose sum is σ = 194735348858072. Its totient is φ = 97367674429032.

The previous prime is 146051511643547. The next prime is 146051511643567. The reversal of 146051511643551 is 155346115150641.

146051511643551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 146051511643551 - 2² = 146051511643547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146051511643551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146051511642551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24341918607256 + ... + 24341918607261.

It is an arithmetic number, because the mean of its divisors is an integer number (48683837214518).

Almost surely, 2^{146051511643551} is an apocalyptic number.

146051511643551 is a deficient number, since it is larger than the sum of its proper divisors (48683837214521).

146051511643551 is an equidigital number, since it uses as much as digits as its factorization.

146051511643551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48683837214520.

The product of its (nonzero) digits is 1080000, while the sum is 48.

The spelling of 146051511643551 in words is "one hundred forty-six trillion, fifty-one billion, five hundred eleven million, six hundred forty-three thousand, five hundred fifty-one".