67220401534 has 16 divisors (see below), whose sum is σ = 118458330480. Its totient is φ = 28204364160.

The previous prime is 67220401531. The next prime is 67220401601. The reversal of 67220401534 is 43510402276.

It is a self number, because there is not a number n which added to its sum of digits gives 67220401534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67220401531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117517899 + ... + 117518470.

It is an arithmetic number, because the mean of its divisors is an integer number (7403645655).

Almost surely, 2^67220401534 is an apocalyptic number.

67220401534 is a deficient number, since it is larger than the sum of its proper divisors (51237928946).

67220401534 is a wasteful number, since it uses less digits than its factorization.

67220401534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235036395.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 67220401534 in words is "sixty-seven billion, two hundred twenty million, four hundred one thousand, five hundred thirty-four".