1651722948042 has 64 divisors (see below), whose sum is σ = 3444736135680. Its totient is φ = 527569459200.

The previous prime is 1651722948023. The next prime is 1651722948049. The reversal of 1651722948042 is 2408492271561.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1651722948049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4099542 + ... + 4484382.

It is an arithmetic number, because the mean of its divisors is an integer number (53824002120).

Almost surely, 2^{1651722948042} is an apocalyptic number.

1651722948042 is an abundant number, since it is smaller than the sum of its proper divisors (1793013187638).

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

1651722948042 is a wasteful number, since it uses less digits than its factorization.

1651722948042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385199.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 1651722948042 in words is "one trillion, six hundred fifty-one billion, seven hundred twenty-two million, nine hundred forty-eight thousand, forty-two".